Reliably Unreliable Guns
aka: Shur Fine Guns
Also known tongue-in-cheek as "Shur Fine" guns because evidently, Hollywood doesn't trust the "big brands" when it comes to guns, as there are two things you can usually expect to see with firearms depicted in fiction:
1: Any jarring or dropping of a cocked, chambered gun will discharge it. Bonus point if the bullet hits a Mauve Shirt
or other expendable mook.
It doesn't matter if it's a cheap Saturday Night Special or a professional quality, $1200 SIG-Sauer, count on this one. Never mind that practically all weapons designed after 1968 include a special mechanism to stop the hammer from falling unless the trigger is properly pulled, and that gunmakers had been adding them for a long time before that. If you bump it, it will go off. (Do note that you should always treat a real gun as though this were true, just in case
.) That said, professionals who use weapons say there are only two classes of weapon users
: those who have had a weapon accidentally discharge, and those who eventually will have
a weapon accidentally discharge.
2: Jammed equals broken every time.
It's well-known that even the best guns still jam every now and then after repeated firing. Usual causes include a round failing to seat properly into the breech, a spent casing getting caught upon ejection (a condition known as "stovepiping"), poor-quality ammunition (insufficient pressure to cycle the weapon) or poor handling while shooting, (not enough energy from the firing is absorbed by the hands/arms, known as "limp wristing"). These errors take only a second or two to correct in real life, so why is it that when a firearm jams in a film or television show, it's suddenly rendered useless
? Aside from its use as a convenient way to disarm a character, no one knows. All we do know that a gun will never run out of ammo
takes it out of commission, so the weapon-disabling jam is it.
For that matter, Hollywood treats a misfire as being the same as a jam as well. While very rare for modern ammunition made by reliable manufacturers, ammunition primers occasionally do not work as intended, to the tune of about one-in-a-million or less. If a round of ammo fails to fire, nobody in fiction simply pulls the trigger a second time if it's a revolver, or in the case of semiautomatics, manually works the action to clear the dud so they can keep shooting. (Note that the recommended practice in the case of a misfire is to keep the weapon pointed in a safe direction for some time: the primer may, in fact, be accidentally slow-burning, and may go off without warning. Of course, if you're fighting for your life, this particular rule goes out the window.) Then again, this fits in with the typical Hollywood approach to plans in general
To a very limited extent, this can be Truth in Television
, as it's possible to jam a weapon so severely that serious work is needed to get it back in order, and every now and then you will hear about gunmakers issuing safety recalls on guns that aren't drop-safe. But that does sort of prove the point about Hollywood's approach: the gun is being recalled because discharging when it's dropped is not
considered normal operation in Real Life
. Note, too that at least in the US all
such recalls are voluntary; firearm manufacturers are exempt from the Consumer Product Safety Actnote
Since this one's so common, it'd be easier to just list especially egregious
examples and subversions. Also see Rare Guns
and Convenient Misfire
open/close all folders
Anime and Manga
- Averted in Full Metal Panic!: The Second Raid. In "Her Problem," Yu Lan's silenced pistol jams when she tries to shoot Kaname. She just clears the jam and quickly resumes firing.
- One of Havoc's two guns stovepipes in chapter 37 of the Fullmetal Alchemist manga, thus allowing Riza to jump into action. He is not shown throwing away the jammed gun, but we can assume he did, since he only carries one afterwards.
- In Brotherhood, a spent round gets stuck in Riza's pistol when she is fighting the leftover Fuhrer candidates, thus enabling her enemies to capture her (in the manga, she merely runs out of ammo). It actually made sense in this case, because the fight was at such close range that she didn't have time to clear the jam before she had a sword at her throat.
- Averted in Gunslinger Girl — During the the first encounter between Hillshire and Franca, Franca tricks Hillshire into misfiring his pistol. It instead merely caused a jam. Hillshire simply fixes the jam and starts firing at Franca.
- There is also a scene where Henrietta is undergoing pistol training. Her gun misfires, and she looks down the barrel to see the problem. Raballo, the handler for another Fratello, promptly grabs the gun out of her hand and yells at her handler Giuseppe for not training her properly.
- Another jamming aversion in an early episode of Magical Girl Lyrical Nanoha Strikers, where after Teana's old magic-firing pistol jams at a critical moment during training, she just fixes the problem in a few seconds and goes back to shooting.
- Justified in Lupin III: Operation: Return the Treasure. Jigen shoots his opponent to deliberately cause a jam, then kills him before he has the chance to clear the jam.
- Type 1 is played straight in Mobile Suit Gundam SEED: Cagalli* throws a pistol in frustration, causing it to discharge. Athrun* , who very nearly gets hit by the stray round, immediately chastises her for being stupid enough to throw a loaded and cocked pistol.
- Justified in Maiden Rose when Klaus' gun happens to jam in the middle of a Mexican Standoff (which is just bad timing) and when he gets out of that he can't fix it anyway because his one arm is badly wounded and the morphine has finally worn off. The problem is then promptly solved by his teammate fixing it for him.
- The Boys has the M20 assault rifle, an Expy of the M16 (it's stated in-story that the M16 was rushed into service pretty much just to get this thing out of the inventory). How bad was it? So bad that it helped create the story's parallel reality; the gun was so poorly-designed that it turned the Battle of Ia Drang from a slightly-American-leaning stalemate to a Curb-Stomp Battle that left every single American soldier dead. A later issue claimed that the magazine was the biggest problem, being made of an extremely light and fragile material that resulted in the feed buckling altogether after only a few shots. It's stated that the only reason the rifle entered service was because Vought-American, its designers, thought that the gun would see so little use in peacetime that they could just bribe politicians into ignoring reports.
- In the segment of the Mass Effect fic The Translation in Blood set during the First Contact War, a turian scout (the future Councilor Sparatus) is able to capture then-Lieutenant Hannah Shepard (Spacer Shepard's mother) because her rifle got caught on something when she was fleeing and went off, wounding her in the arm.
Film — Live Action
- In Schindler's List, Göth is about to execute one of Schindler's workers, as he has done several times before already, but his Luger jams. As his lieutenant tries unsuccessfully try to clear the jam, Göth takes out another pistol (a Browning Hi-Power) and tries to shoot him again... but the Browning also jams. Göth, after multiple attempts to shoot are foiled in this manner, eventually pistol whips the worker and then leaves in a huff.
- In Help!, the idiot "scientist" and his assistant have a recurring problem: none of their equipment works when it needs to, leading the assistant to invariably blame whatever country the object in question came from. As a result, this trope pops up twice: once with a "cheap" English pistol, leading them to bemoan their lack of a Luger, and once with their time-slowing ray, leading them to curse "American rig."
- In Airheads a character drops an MP5K, causing it to spin around on the floor and fire its entire magazine, all by itself. The entire MP5 line is widely regarded as among the world's finest sub-machine guns, in use by numerous special forces, and they typically cost in the low five-digits.
- In the cult flick The Boondock Saints, Rocco emphasizes a point by slamming his hands down on a table, causing the Beretta 92 pistol sitting on the table — which, mind you, is standard issue for U.S. soldiers (although the military version (M9) is not 100% the same) and costs about $700 — to fire, killing the poor pussycat that was laying next to it.
- The sequel averts this, however, when the brothers drop their Desert Eagles when surrounded by police and SWAT after the last shoot-out.
- One of the Feast movies has an example so outrageously absurd that it almost has to be a parody of this trope. A gun discharges on its own and blows off some guy's face, but the gun is a single action revolver — with the hammer down. For those not in the know, even pulling the trigger on one in that state does nothing; a single-action revolver is impossible to fire unless the hammer is cocked back first.
- From True Lies: Helen attempts to use a MAC-10 machine pistol and promptly loses control of it and drops it down a flight of stairs, where it continues firing all by itself as it tumbles down, taking out nearly every mook in the terrorist camp.
- Somewhat Truth in Television, as the MAC-10 is a very simple, fairly light gun with an insanely high rate of fire, which fires from an open bolt, meaning that jarring the weapon can cause the bolt to unlock, slam home, and fire a round. If it was badly-maintained (a distinct possibility given the demonstrated lack of quality of the aforementioned mook) it could also be subject to a phenomenon known as slam-firing, where a gun, even a semi-auto, continues to fire without the trigger being pressed, until the magazine's empty or the mechanical issue (either the bolt failing to lock back, or the firing pin being stuck forward when the bolt closes, in a closed-bolt gun) that caused it resolves itself.
- Given that Helen is, at that point, ridiculously civilian, it is completely possible that she'd drop the surprisingly recoil-heavy submachine gun, and it would discharge on striking the ground. The hilarious part is its effectiveness in clearing the room.
- However, MythBusters tried to replicate this one and couldn't get the MAC-10 to fire; for the scene in the movie they had wrapped a wire around the trigger to get it to continue firing.
- In Back to the Future, Marty is saved repeatedly from being shot by Libyans because their rifle jams. They are shooting an AK-47, which are famed for their reliability even under the harshest conditions. However, we do see them simply trying to clear the jam rather than abandoning the gun immediately.
- Could be an ammo problem, since a reliable gun means nothing if the bullet doesn't produce enough gas pressure to cycle in the next round.
- This is Truth in Television, to an extent. Most of the ammo on the market for the AK-47 is military surplus, which has been surplussed because it's getting too old. Given that terrorists who want a nuclear bomb are not going to be state-supported (what government wants to be connected with a terrorist act that will get their capital vaporized once that connection is found?) they're going to have to get their ammo on the open market, and given that they come to kill Doc in a VW Microbus, they're obviously operating on a shoestring.
- Seen in Hot Fuzz, where one of the heroes intentionally throws his Shur Fine shotgun at the cobblestone street while surrendering, causing it to go off and hit a bad guy.
- In The Untouchables, one gangster's Thompson jams during a fight. This was a problem real Tommy guns were frequently subject to, which is one of the many reasons it was never as popular as gangland movies would have you believe. To the gangster's credit he tries repeatedly to clear the jam, but it gives the mousy accountant among the Untouchables time to get close enough to KO him with the butt of his shotgun.
- This trope is subverted in Get Shorty, when a thug mocks Carboni's choice of weapon (AMT Backup, a small but effective pistol). The thug, perhaps thinking he's Genre Savvy, says "What's that, a Wop 9? The Fiat of guns, always jammin' on you at the wrong time," to which Carboni responds by slinging four rounds through the man's chest.
- In Lord of War, Yuri is nearly executed by a pair of thugs in Africa. One aims his AK-47 (sold to him by Yuri, naturally), pulls the trigger... nothing. Clears the jam, sticks it in his face again, pulls the trigger... nothing. Yuri points out that they'll do that sometimes and tries to fix the jam for him... the thug just hits him with the butt and knocks him out. Well, it was worth a shot, anyway...
- Misfiring guns feature prominently in both the backstory and the climax of Unforgiven, which is more appropriate for the time period, in which lower quality guns and ammo were more common. The rainy night of the climax might also have played a factor.
- In the beginning of Indiana Jones and the Kingdom of the Crystal Skull, Indy escapes capture/execution by the Soviets by dropping an M1 carbine, causing it to shoot one of the soldiers in the foot. Despite M1 carbines not remotely being known for going off when dropped. Had it been a Soviet-issue SKS, this result might have been more likely. Possibly lampshaded by the fact that Indy looks as surprised as the Soviets when it happens, though he's quick to take advantage.
- Franz Liebkind's Luger in the 2005 version of The Producers jams and fires when dropped, with great comedic timing. The classic Luger's toggle action actually is somewhat temperamental.
- In The Last Dinosaur big game hunter Masten Thrust throws away his hunting rifle after it jams while trying to shoot a Tyrannosaur that's about to attack them. Not only does he make no effort to clear the jam, but he never even tries to get the rifle back later (he has the perfect opportunity to pick it back up later, but instead only takes the scope to put on his new crossbow). The fact that he's both a lifelong hunter and a firearms collector makes this all the more implausible.
- During a combat sequence in Kelly's Heroes, a 30-cal machine gun jams at a very inopportune time; possibly because the operator didn't have someone to help him feed the belt ammo. Fortunately, the Germans shooting back at him apparently attended the Imperial Stormtrooper Marksmanship Academy, because he manages to clear the jam and kill them all anyway.
- Averted in The Way of the Gun. At one point Benicio Del Toro's character is firing a pump-action shotgun and it suffers a stovepipe malfunction. He simply takes a moment to clear the jam and resumes firing. The film was notable for the accuracy of its depiction of firearm usage. The director's SWAT team brother served as an advisor.
- Averted in The Hurt Locker. The protagonists are called upon to fire a .50 Barrett rifle, which jams due to blood in the magazine. The rounds are removed from the magazine, individually cleaned, breech-loaded and fired as normal. It's unlikely that fresh blood on its own would have caused such a misfire, but tiny bits of flesh (which would) are implied to be mixed in with it.
- In the sci-fi comedy Sleeper, a Running Gag involves a different part of a laser cannon blowing up every time they try to fire it at Woody Allen.
- The villain of Double Take manages to dispatch himself this way; bragging about his shooting skills when about to kill the protagonists, he ends up falling down a long flight of stairs with his gun going off several times. He hits the floor with a Gory Discretion Shot (pun unintended for once) with the gun clearly pointing at his head before the switch. One character comments: "He was right, he didn't miss once!"
- Averted in The Hard Way. Michael J. Fox's character, a spoiled naive actor researching a cop role with a tough cop played by James Woods, gets lucky in a shootout where a man firing at him seems to run out of bullets. The cop knocks the gun against a newstand, and shoots into it, demonstrating it had merely been jammed.
- In the finale of The Warrior's Way, one of the outlaws has a machine gun braced on another's shoulder. After he has his arms cut off, the gun starts firing on full auto, pivoting on the corpse of the partner and neatly stitching across a horde of outlaws who were standing behind him.
- In Taps, a dropped M16 sparks a firefight when it discharges accidentally.
- In Lockout, set in 2079, a gun not only falls out of man's pants, it discharges directly at the policeman who bothered the man. But then, everything in the movie seems to be made exactly so the incredibly ridiculous plot could happen, even if it doesn't make any sense at all.
- In Trading Places, Winthorpe (played by Dan Aykroyd) tries to kill himself with a Colt .45 automatic that he just purchased from a pawn shop; the gun fails to fire. Disgusted, Winthorp throws the gun away. It promptly discharges when it hits the ground.
- Alan uses a SPAS-12 for a time in Jurassic Park, only to drop it after firing only a few shots at the raptors due to a simple stovepipe jam that would have taken a second or less to clear if he just plucked the empty shell out of the ejection port. Of course, this is assuming he knows enough about firearms to identify and fix the problem in a life-or-death situation. There's really nothing in the film to suggest he's ever handled or fired that type of weapon before.
- In Alan Partridge: Alpha Papa, Alan attempts to fling Pat's shotgun into the sea. It lands on the pier railing and goes off, shooting Pat.
- Played with in the Marvel One Shot short film A Funny Thing Happened on the Way to Thor's Hammer. Agent Coulson, in a convenience store during a robbery, lets the crooks know that he has a gun. When they want him to toss it over, he remarks he'd rather not and risk it going off, so he asks if it would be ok to slide it to them. As the guys agree, he takes them out using a bag of flour and moves he learned on "Tae-bo" tapes. All this in the time it takes to fill-up his car at the pumps.
- A Biggles book had a pirate (naturally set a few centuries before Biggles' time) lean a pistol against a candle while sitting down at a table, and when a vibration shook the table, the pistol slipped off the candle, hit the table, and discharged a ball right into the pirate, killing him. Even modern replicas of flintlock weapons are quite prone to accidental discharge when dropped. Assuming that the gun falls with lock up, then even when powder pours out of the priming pan it can be still ignited by the sparks.
- This is a major plot point in Valentin Pikul's novel The Riches (Богатство). A misfiring rifle kills Ispolatov's love interest.
- While most guns work just fine in The Dark Tower, fully automatic firearms are guaranteed to jam. This is justifiable in that everyone who uses them is either A) using a scavenged, poorly maintained weapon he is unfamiliar with, B) Axe Crazy, or C) Too Dumb to Live.
- This is why Harry Dresden only uses older weapons like revolvers: his magical aura interferes with any kind of technology, and the better the tech, the faster he breaks it. Revolvers are functionally simplistic, and can't jam. Notably, he doesn't use his magical hex on handguns (likely because a handgun failing doesn't mean it won't shoot).
Live Action TV
- A common gag in Slapstick comedy and Sitcoms: "Don't worry, it isn't loaded. [Bang! Bang!]" Seen in As Time Goes By, "Avoiding The Country Set".
- Averted in Bravo Two Zero — Dinger's GPMG jams, and he just ejects the round and carries on (this being Dinger, he also shouts "BASTARD!").
- Subverted in the series finale of Ugly Betty — Wilhelmina is accidentally shot by an alcohol-fueled Tyler. As a final favor to Claire, Wilhelmina lies to the press and tells them she was shot when she dropped her gun while cleaning it. The reception is dubious but her lie still works.
- Mentioned in an episode of Father Ted where John shows Ted that he has bought a rifle to protect his shop and has it cocked and ready. Ted asks if that's not somewhat dangerous, to which John says that it would only be if you dropped it or something. He then slams the gun down on the table, causing Ted to jump and John to just laugh.
- Subverted in Terminator: The Sarah Connor Chronicles When John is at a military school, his classmate's rifle has a stovepipe jam, and John, having been raised Crazy-Prepared by his mom, clears the jam in about ten seconds, all while teaching his fellow student the drill to do so.
- In one episode of The Adventures of Brisco County, Jr.., our hero is struggling with an assailant while his lady friend prepares to hit said bad guy with a nearby pistol. Brisco tells her to stop, beats the bad guy, then demonstrates that the impact would've caused the flintlock to go off. Into her.
- Same network, different decade and genre: An episode of Back To You opens with a news report featuring a gunshot going off during a hostage crisis. It transpires that this is the result of Chuck Darling fumbling the hostage taker's gun after he's taken it from him.
- War of the Worlds. Actor Richard Chaves (playing Lt. Col. Paul Ironhorse) had his assault rifle jam during an action scene. Being a Vietnam veteran, Chaves just cleared the jammed blank as he would a real round and kept firing.
- Played straight in an episode of CSI: NY, where a sawn-off shotgun is thrown out of a window by the villains and bump-fires into a passerby, killing her and leading the protagonists to another crime committed with the weapon.
- Averted in a later episode, where Mac Taylor and his gun fall at least 30 feet onto a hard tiled floor — the gun bounces, but doesn't go off.
- Averted in the reimagined Battlestar Galactica when Adama demands Starbuck's sidearm, chambers a round, presumably flicks off the safety and tosses the weapon on the table, where it bounces quite a bit but does not go off.
- Jams happen periodically in Band of Brothers. The characters usually get to work clearing them, sometimes having trouble with it and sometimes not.
- All the actors were trained in WW2 weapons handling (as their characters would have been) so, as in real life, the ability to sort out a jam would depend on the actor's own weapon skill.
- In one episode of NCIS, a perp drops his recently fired gun while surrendering. Tony proceeds to flip out on the guy.
- Still averted, the gun didn't fire. And also averts Artistic License - Gun Safety, as it's still a stupid thing to do, roughly handling a loaded weapon with a round in the chamber.
- Buffy the Vampire Slayer. In "Flooded" Buffy reprimands a security officer for using a gun on a demon, tosses it aside and winces at the subsequent discharge sound.
- In one episode of Frasier, Martin's gun from his police days (not seen in the episode, but identified as an M1911 in She's the Boss) is brought out from its storage "under the bed" still in a shoebox. The shoebox is knocked off a table and, naturally, the gun goes off, shooting up at an improbable angle to damage the apartment decor.
- In an episode of the Lovejoy TV series ("The Axe-Man Cometh") an antique flintlock which had been used solely as a display item for decades was apparently loaded, since when it was grabbed and used to try and bluff the eponymous axe-man it actually went off leaving him with an Ash Face.
- Many cases of this trope have been tested--and busted—by the MythBusters. One notable exception involves an urban legend where an explosion in a room caused some Russian SKS riflesnote therein to go off—the MythBusters were able to get one of the four to go off. Earlier, they had failed to set off any SKS rifles with a boom-car stereo at full volume.
- The classic Doctor Who serial "The Highlanders" is kicked off when companion Ben casually throws away a pistol when asked to get rid of it. The weapon discharges, alerting British redcoats to the location where the Doctor, his companions, and some Scottish rebels are.
- In Love/Hate, guns have an alarming tendency to jam at inopportune moments. Most characters seem to have no knowledge of basic firearm maintenance. One character tries to shoot Darren only for his pistol to jam. Darren disarms him and keeps the weapon for himself, making use of it later. Nidge loses his Glock at one point, causing the magazine release to be hit and the chambered round misfires. Rather than abandoning the weapon, Nidge clears the jam, reloads and fires again. Then again, Nidge is the one character who is shown onscreen learning how to field strip a weapon.
- One verse of Rilo Kiley's "Accidntel Deth" (sic: Indietronica artist Dntel produced the song) includes at least one instance where the accidental death was of a deer the narrator's father (who probably isn't Jenny Lewis) had killed when his shotgun went off without him meaning it to (probably because he hit it too hard or something) while hunting with his dad when he was eight. The dad swears off guns after that.
- The filk "Space Hero" by Anne Prather & Julia Ecklar sings about some the wonderful craftsmanship of a space ace's weaponry: "With the stocks made by Mattel...Well, on every other pass, one'll get you in the ass!"
- The entire music video for Korn's "Freak on a Leash" wouldn't exist without this trope. The video starts off with a bunch of animated children sneaking out at night so they can play on private property. The security guard pursues, trips, gun falls, gun fires and the rest is history.
- BattleTech's ultra-series autocannons are considered a version of this by some players due to their chance of randomly breaking down and becoming dead weight for the rest of the game when using their optional double rate of fire (their main defining feature). Background-wise, the fact that even the Clans, who unlike the nations of the Inner Sphere never lost the technology and have been using UACs for over two hundred years, somehow never managed to eliminate this problem definitely plays the trope dead straight.
- Then there's the Rotary Autocannons; More Dakka at it's finest, pretty much. And unlike UltraACs, they have systems built-in to clear jams during the battle, without the pilot having to get out of his cockpit to mess around with it. Too bad they have fairly limited ammo reserves, and they only come in the lower autocannon calibers.
- Fluff-wise, the difference is that a rotary autocannon is a multi-barrel arrangement with a presumably complex feed mechanism that "only" jams every so often while ultra autocannons use Explosive Overclocking to achieve their maximum rate of fire, resulting in actual mechanical breakdowns once in a while. In game terms, the latter can actually end up looking more reliable since while one bad roll can make them sit out the rest of the fight with no chance of recovery, the former tend to jam more often and clearing each jam comes with its own opportunity cost (in the form of at least one turn not doing much else) and doesn't guarantee the weapon won't promptly jam again right away next turn.
- Even beyond that, in the game's fluff, there is the Quikscell company, maker of cheap weapons, ammo, and tanks, all traditionally considered the least reliable in the universe. (The rules don't actually reflect that by default, though.)
- In Paranoia, standard-issue weapons certainly don't malfunction 5% of the time. Maybe they were sabotaged by Commie mutant traitors. You aren't a Commie mutant traitor, are you?
- Generally, the more destructive the weapon is when it works, the more destructive it is when it doesn't. And the harder it is to fix. (Or just prevent it from blowing up. Or just unstrap yourself from it and outrun the blast radius.) And if it was only assigned to you for the duration of the mission, then the more expensive the fine for allowing valuable mission equipment to be damaged.
- As for those experimental weapons that the Troubleshooters were field-testing for Research and Design... Well, perhaps the Troubleshooters didn't maintain them properly. What's that, you say? The maintenance instructions aren't available at their security clearance? Huh, go figure.
- Dungeons & Dragons 2nd edition allowed the arquebus, a primitive rifle, but gave it a chance of backfiring and damaging the user every time it's fired. Partly as a measure of Fantasy Gun Control, but also Truth in Television.
- Also necessary for play balance. The arquebus only did 1d4 damage...unless you rolled a 4, in which case you got another 1d4 damage. With no upper limit. It was entirely within the rules (not very likely, but within the rules) for a 1st level character to one-shot a maximum age Red Dragon with one of these things.
- Akin to the D&D example, firearms in Pathfinder (which are fairly reliable for a fantasy setting) will damage themselves in some way on a critical failure, giving them the "broken" condition. It's still usable though, albeit slightly less effective and more dangerous to the one holding it — a second critical failure renders it useless and injures the gunman.
- In Warhammer40000, some weapons have the "Gets Hot" rule. This means that the weapon may break, usually with lethal results, if a one is rolled. Justified in that the technology is poorly understood and that most factions have reserves.
- Although the archetypical Gets Hot, the plasma gun, isn't actually breaking. It's building up too much heat from being repeatedly fired and venting the super-heated gas to keep the gun from exploding. If your a Space Marine, whose armor is deliberately made especially heat-resistant, no problem; not so much if you're a Guardsman.
- The Ork Psycho-Dakka-Blasta will break when fired. This happens when the player rolls a certain number (basically, you roll a series of dice. The number of shots fired is equal to the total of dice. Rolling a 1 or 2 jams the weapon for the rest of the game). Again, justified, as the Orks are essentially firing a jury-rigged minigun which probably shouldn't even work at all on full auto.
- GURPS has rules for malfunctions, with an attack roll that lands on or above a specific number indicating that the weapon malfunctioned (with unreliable guns having a lower target number and highly reliable guns having such a high one that only a critical failure will cause them to jam). The High-Tech sourcebook, having a thick Gun Porn section, also includes information on certain guns having a reputation for firing when dropped and mentions the dangers of old single-action revolvers as detailed below in the Real Life section. Damage to the gun (deliberate or otherwise) can also have a variety of effects, from lowering the malfunction number (i.e. making it more likely to jam when fired) to decreasing the accuracy or damaging the weapon's frame or stock itself.
- Hero System's optional rules for weapon malfunctions avert "Jammed = Broken". The worst case scenario, a character with no Weaponsmith skill and a misfire, only calls for two phases to clear the weapon with no chance of the round going off while being cleared.
- NERF blasters are mostly quite reliable, although the occasional blaster makes it through Quality Control with crippling defects. The Maverick has developed a reputation for having the most problematic samples due to the strict tolerances required for a reliable cylinder-advancing mechanism.
- Another gun with a revolver cylinder, the Barricade, resembles a War Hammer 40000 bolter than traditional a revolver, but it also has a tendency to misfeed darts at the first (and worst) opportunity. Part of this is due to its firing mechanism, a flywheel-based friction launcher, sometimes not actually having the power to pull the dart out all the way before the cylinder advances with the next trigger pull.
- While otherwise reliable in terms of actually firing darts a good distance, the Longshot rifle has a higher-than-average tendency to chew up darts from its magazine at the wrong time and foul them in its receiver, compared to something like a Recon. It's one of the prices to pay for a fairly powerful dart launching system.
- Other non-Nerf blasters, especially cheap, brandless generics, are also prone to such reliability flaws that renders them useless to non-modders.
- Some brands even use rope as part of their cocking and launching mechanism. These, naturally, fray quickly with use and are often on the difficult side of replacement. Cock one of these guns too hard and the rope for the mechanism can overstretch or snap, rendering it useless. Shur-Fine Guns indeed.
- In Grand Theft Auto IV, guns occasionally discharge if they are dropped for any reason. Occasionally, they may even discharge when their wielders fling it around after being hit themselves. Sure, he could also be pulling the trigger in reflex, but even semi-automatic weapons discharge multiple times (and it is impossible that a reflex would enable the shooter to pull the trigger several times in a row).
- In Gears of War, your gun can jam if you reload incorrectly. The consequence is that you have to take a moment to clear the jam before you can resume firing.
- It should be noted that this is only if you, the player, press the reload button while reloading at an incorrect time, and so, if someone never attempts the 'active reload' minigame to reload their gun, it will NEVER jam (active reloading is specifically mentioned as skipping the proper reloading method to load the gun faster, but chancing a misfeed). It's done to reload the gun faster (a life saver in mutliplayer) and get a damage boost.
- Americas Army. Yep, in the official computer game your weapons can jam. Tap a key to clear the jam, with a tap to the bottom of the magazine followed by the forward assist.
- Similarly, in S.T.A.L.K.E.R.: Shadow of Chernobyl, damaged guns can jam... but can be easily cleared by just hitting the reload key. Keep using them, though, and eventually they won't be able to go through a full magazine without a jam, to the point where they'll probably end up getting you killed more often than they kill enemies. Eventually they'll just break completely.
- In System Shock 2, your guns are not only likely to jam at the drop of a pin; repairing a jam is an extremely complicated technical operation involving detailed cybernetically-enhanced skills, a consumable nanotech-based resource, and a small minigame. Then again, given that laser rifles can somehow jam in this game...
- Word Of God is that there was supposed to be an in-game explanation for this: basically The Many had released a corrosive gas that only affected mechanisms into the environment. Unfortunately, the audio log explaining this was left out of the finished game.
- In Metal Gear Solid 3: Snake Eater, Ocelot stovepipes his own semiautomatic pistol when he tries a fancy move he'd heard of for the first timenote . Ocelot then attempts to pistol whip Naked Snake with his gun instead of clearing it, despite the fact that Snake has just taken down half a dozen of his men with little more than his bare hands. Clearly it was his turn to hold the Idiot Ball. Snake easily counters, and when Ocelot drops his gun the cartridge pops out, clearing the jam. Snake then explains this to Ocelot (and the audience) and Snake attributes it to the latter's faults and inexperience. Since the game is a prequel it establishes why he's Revolver Ocelot in the present/near-future storyline.
- In the introduction cutscene of Metal Gear Solid 4: Guns of the Patriots, Snake tries to fire an AK-102 but it jams after two shots. He does try to cycle the action manually and clear it, but it won't budge, and he ends up tossing it to the ground; a Codec call to Otacon reveals that the ammo in that magazine was of poor quality. He lampshades the lack of jams in actual gameplay by noting how rare that specific type of jam isnote . In fact, in the short playable sequence right after Snake drops the gun, you can pick it back up, but it has no ammunition.
- This is also forcibly invoked as a gameplay mechanic in most of the games - basically, all firearms used in combat have identification locks built in. Anyone other than the intended user attempting to fire an ID-locked gun will find the gun completely incapable of working, even with a loaded magazine and a round in the chamber; hence why the player can't just break the neck of the first guard they find and use his assault rifle for the whole game, they have to break into an armory and steal one that hasn't been registered yet.
- In Fallout 3 and Fallout: New Vegas, guns with a poor condition (which is fixed by breaking apart a matching gun for parts to repair your gunnote ) can jam when loading. This includes the first round of a bolt-action rifle failing to load, the magazine of a submachine gun needing a good whack on the bottom, or the door to a laser pistol's pop-out battery not closing. Considering this is supposed to be two-hundred years After the End, which was probably when the gun and cleaning supplies for it were made, this is a Justified Trope. It's also defied in that when that gun does jam, your character simply works the action again until it does load. Dropping a gun won't discharge it either. Tired of that 10mm pistol now that you have an M1 Garand-alike, and don't want to lug it around? Drop it on the ground, and it ... lands.note
- One point in 3 touches in this trope in a possible lampshade. You can rescue a rookie soldier who is in hiding and complaining that his gun is jammed, claiming it is useless. If your character has decent Small Guns, you can help him fix the jam, and he will be armed again.
- Earlier games in the series just had the gun lose all the ammo in its current magazine on a critical miss, though energy weapons supposedly explode on a really bad roll on the critical miss table.
- A few Game Mods for 3 and New Vegas add a slight chance for a jam on any use of a firearm, modified by its current condition.
- Fallout Tactics includes the Chauchat (mentioned in the Real Life folder) as a Joke Weapon, which cannot actually be used and serves no purpose whatsoever.
- Far Cry 2 allows for weapons' condition to decrease, causing the gun to jam while firing. This involves the player character struggling with his weapon and examining it until you hit the reload key, which fixes the problem. Every weapon can jam except the IEDs and flare gun; from simple misfeeds to a flamethrower springing a gas leak or an RPG failing to ignite and spinning on the ground before exploding. If the gun's condition reaches zero, it violently breaks into pieces, with the entire front receiver of a rifle or trigger of an RPG breaking off.
- Notable is how the AK-47's notorious reliability is acknowledged in-game and is less likely to jam on you, if ever. The AK runs through about a thousand rounds before getting into poor enough condition to start jamming, it takes about two hundred more before blowing up. The golden AK's last even longer. The only gun in the game that doesn't jam or misfire is the flare gun, and even that still blows up eventually.
- Particularly notable in Far Cry 2 is how little time a gun actually lasts; it can go from a shining, brand-new weapon to a stained, corroded wreck within hours at best, with some weapons like the USAS-12 visibly corroding with every shot. The vast majority of guns in this game must be held together with nothing more than chewing gum and reassuring platitudes; that or the FC2 universe is afflicted by turbo-rust. Another extremely silly aspect of this mechanic is that jams always happen before a gun fires while failures always happen afterwards, meaning the player character will operate the pump of a shotgun before shooting so it can jam (even though they already did so after the last shot) or a weapon will successfully fire, cycle, and then explode.
- There's also the weapons' physics-defining proclivity to fling parts of themselves toward the player's face.
- All guns in Jagged Alliance and its sequels have a % condition rating and a rating of reliability for both the gun and the ammo. The more reliable guns work better at low condition than other guns and wear slower. Guns in good condition are impossible to jam, while guns with 50% or less condition will jam every other shot. Guns below 10% or so are useless hunks of metal.
- Jagged Alliance 2 adjusts things slightly. A gun always has a chance to fire, no matter how degraded it is, but if it gets to 0%, it will never work again, regardless of repair. The lower the condition of the gun, the more likely that it will jam, and the chance to clear the jam by refiring the gun drops significantly.
- Also, when a jam does occur, there's only about a 50/50 chance you'll be able to clear it and re-fire the gun before you run out of time units. Presumably simple malfunctions that can be cleared with a tap and a forward assist are abstracted for simplicity's sake.
- While all guns operate perfectly in normal conditions in Eternal Darkness, one of the insanity effects makes one character drop a flintlock pistol to the ground while reloading his other one, causing it to discharge and kill him. He doesn't actually die though.
- The late-90s Alien vs. Predator PC game featured occasional and very subtle jamming of the Marine's pulse rifle. This was essentially just the same dry-fire sound as a magazine running dry; the weapon would resume working after the trigger was released. Only really a problem when firing on full auto... and if you were past the point of "short controlled bursts" you were probably doomed anyway.
- In the mission "Reuniting the Families" in Grand Theft Auto: San Andreas, Ryder hands your character an ancient, POS AK-47 that jams to the point of uselessness right when you need it.
- During the Idle Animation in Metro 2033, the player character will toy with the gun. Depending on which gun, he will occasionally break off a piece by accident, pause in confusion, and then stick it back on. However, considering that half the weapons are cobbled together from several other guns and industrial tools, it's a bit more forgivable.
- The guns themselves will never jam, but several of them are hand-made from pieces of scrap, like the Bastard Gun (which is little more than a piece of metal with a firing pin and a barrel). In addition, you have two choices for ammunition: "dirty" ammo, which is plentiful but not very powerful due to inferior gunpowder, and military-grade ammunition, which is significantly more powerful but also used as money.
- In Saints Row 2, you interrupt the trial of your partner Johnny Gat and hold up a bailiff. At your command, the bailiff drops his gun, which goes off, prompting everyone (except for Gat) to duck for cover and Gat's lawyer to ask if anyone got hit and needs his expertise.
- Terrorpods extend a variant to missiles. Some of the documentation implies that you may miss and hit a friendly installation. In the actual game, your missile has a manual guidance system where you need to keep the drift indicators within the shown reticule. If it drifts outside the reticule even by one pixel, the missile won't detonate. Given that the target is usually larger than the reticule, the usual result is that missiles that hit won't cause damage (which is much more punishing if your computer is too fast.)
- While the blaster rifles used by sand people in an early level of Star Wars: Jedi Academy will sound off as though they are being fired multiple times when you're in range of an enemy using one, they will only actually launch a bolt maybe one in seven times.
- A hunter in one of the Hunter The Reckoning video games is shown to suffer stovepipe jam in his handgun when fighting, and mentions having to use his knife instead. It takes far less time to rack the slide of a pistol than to switch to a knife.
- In Isle Of The Dead, the rifle will explode in your face and kill you as soon as you fire it unless you oil it first. There's no sign that anything's wrong with it in the first place until you pull the trigger.
- In The Oregon Trail II, when hunting, there is a random chance that you will accidentally shoot yourself, possibly resulting in instant death.
- In Borderlands 2, none of the guns jam but this trope is played with by two of the gun manufacturers. Bandit guns are made from scrap, covered with spikes and stupid-but-cool paintjobs, and have misspelled and grammatically incorrect names. They have huge mag sizes and decent power, but low accuracy and the slowest reloads. Tediore guns are inexpensive, plastic and boxy with drab or cheesy colour schemes and names that sound like bargain-bin-product adverts. They're below average on almost all stats, but they're dirt cheap and have a unique trait - instead of reloading, the guns are thrown away and explode like a grenade before reappearing in the owner's hand, giving them the fastest reloads (though with the added loss of you losing all the ammo that was left in them, since that's what powers the explosion - toss one after only a few shots and it'll be deadlier than if you emptied it). The explosion is actually a flaw of the digistruction procedure that remakes them, but they advertise it as a perk.
- The humorous Doom Game Mod "Extreme Weapon Pack" turns some weapons into these. The shotgun fails to fire literally 95% of the time, the super shotgun (one of its barrels broken off) has so much recoil that it spins you around every time when fired, the chaingun takes forever to spin up and is very inaccurate once it begins shooting, and the BFG takes about a minute to fire each time.
- The first episode of Beast Wars had Cheetor's gun jam. Subverted in that Cheetor cleared the jam, and made a sneak attack by shooting Megatron in his beast mode face.
- Parodied on The Simpsons: to ease Marge's worries about his new gun, Homer turns on the safety, causing it to discharge into a photo of Marge. Then he notices that he actually turned the safety off, turns it on, and causes another misfire. After a stunned second, he decides to gently set the gun on the table...and a couple of seconds later it goes off anyhow, ricocheting off several surfaces before striking a nearby knife which embeds itself in the picture, right between Marge's eyes. As Lisa says, "No offense Mom, but that was pretty cool."
- In the early "Kenny gets killed in every episode" era of South Park, Kenny was once killed by a discharge by a guy who was quitting hunting and dropped his gun.
- Which happened to have run out of ammo not thirty seconds earlier.
- Robin Hood — Trigger's crossbow Old Betsy goes off should Trigger so much as bump it.
- Despite the page quote, this is oddly averted on Archer, despite the character's twin habits of carelessness with his tools and causing embarrassing and accidental injuries to his coworkers. Indeed, later in the scene quoted, after a call girl has been struck with a poison dart fired from a pen, Archer tells Cyril that the belief that if something would happen, it would come from the .25 Chekhov Pistol is an incredibly facile argument.
- Standard doctrine is to always, always treat the gun as loaded and to handle with incredible care to avoid this trope, no matter how reliable your gun is, just to avert the whole 'gun going off for no damn reason' side of this trope. Then, treat the weapon as if it will go off for no damn reason anyway and make sure it's always pointed away from anyone or anything you don't want holed. Gun safety rules are big on "belt and suspenders" thinking; nobody wants to be responsible for the tiniest accident that ends up killing another person, after all.
- It's important to note that accidental discharges (mechanical failure) are different from negligent discharges (operator carelessness). Accidental discharges are very rare and can be minimized near to the point of elimination with good maintenance and stringent obedience of gun safety rules, but regardless of what so-called "experts" say, when all these rules are observed and followed, negligent discharges will not happen, nor will injuries and/or deaths from accidental ones; that's why the rules are there in the first place.
- In real life, almost all weapon reliability issues stem from either magazines or ammunition. Using factory-loaded ammunition, military magazines, and regularly cleaning and lubricating the weapon will typically make malfunctions quite scarce.
- Also of note, some older military surplus weapons (milsurps) may be filled with cosmoline, which is used to preserve firearms for storage. In order to remove cosmoline, disassemble the gun and give it a bath in paint thinner (also called mineral spirits - acetone and WD-40 work too.)
- Real Life example: The infamous North Hollywood Shootout. Two bank robbers did a job armed to the teeth with modified AKM rifles and full kevlar suits to protect them. One of them was cornered into a one on one with an officer when his assault rifle jammed due to a stovepiped cartridge. Ordinarily, this would have taken only a moment to fix, but the robber had earlier been shot in the hand, rendering him incapable of clearing the jamnote . After his attempt to clear the jam failed, he threw the assault rifle to the side, pulled out a 9mm pistol he had as a sidearm, and shot himself.
- It is unknown whether he was trying to somehow pull the slide with his chin, or if he intentionally blew his own brains out. It's also frequently said that one of the police officers that cornered him also happened to shoot him in a place that would have proven fatal at the same moment he shot himself, for what it's worth.
- Regarding firing while dropped, this is (in some cases) Truth in Television; many manufacturers will not certify guns as being "drop safe", and in safety guides hunters are advised not to climb while holding loaded guns or lean guns against trees in order to avert this trope. It should be noted that such events are exceedingly rare even in "unsafe" guns, from simple statistics.
- The South African Vektor CP1 pistol was recalled in 2000. The recall states that the loaded gun can discharge if bumped or dropped. While those sold in South Africa had the defect corrected and were shipped back to their owners, Vektor's lack of any overseas infrastructure made this impossible for the roughly 2000 that had been sold in the US (intended to be the pistol's primary market), and thus they paid simply $500 cash to everyone who returned a pistol (compared to the purchase price at the time of $400). As a result, the CP 1 is now very rare in America.
- As of late 2008, the Ruger LCP and SR9 were recalled for parts replacement, due to potential discharge if dropped.
- Wartime examples of the Luger are notoriously not drop-safe, even with the safety catch engaged.
- Here is a news story about a Kahr P40 going off after being dropped on a hard tiled floor.
- The Franchi SPAS-12 originally featured a lever-type safety which, as it aged, would eventually cause the weapon to fire if it was toggled while the weapon was loaded, as well as fail to prevent the gun from firing with it on. A recall order was issued to replace these with a different, more reliable safety, though most of the SPAS-12's in existence still have the original safety — and with the weapon out of production, even the most recently-produced examples are going on thirteen years old by now.
- The Remington model 700 rifle has a reputation for having a highly questionable safety mechanism, which is infamous for either causing the gun to randomly fire, or for not doing anything to keep the gun from firing. The trigger mechanism used on the rifle from its original design to about 2007 also had gained a bit of a reputation for causing the weapon to discharge on its own, though Remington has dismissed these claims, instead blaming negligent users for not properly maintaining their weapons and pointing them directly at other people for extreme lengths of time, even pointing out that some of the claimants admitted to police that they "may have accidentally" pulled the trigger themselves; military rifles based on the model 700's action, in use by people who have received proper training on how to handle the weapon, continue to use the original trigger mechanism, and it is also still available for custom orders.
- The Chauchat "Machine rifle" was the first squad automatic weapon and the most widely-produced automatic weapon in World War I. It introduced a number of features seen on modern long guns, including a pistol grip, an in-line stock, a fire rate selector, and stamped steel components to simplify production. As with many pioneering designs the weapon had several design faults, including a relatively complicated feed path necessitated by the heavily tapered case of the standard French 8mm Lebel cartridge (an issue that would plague all French efforts at automatic weapons until the modern straight-cased 7.5x54mm was introduced in 1929), and the use of long recoil operation. There were also production issues stemming from the traditional arms manufacturers being fully utilized to make traditional arms, therefore Chauchat production was given to less experienced firms that resulted in quality control and other manufacturing problems, including poorly aligned sights, which were so common that it was nearly impossible to exchange parts between any two Chauchats. The major issue that was responsible for 75% of all stoppages were the open sided magazines which would inevitably become clogged with dirt and debris. Overheating was the second leading cause of problems with thermal expansion jamming the gun. Despite its generally lackluster performance it was still the only/best option available and saw extensive service by the French and 8 other nations during the war and beyond. The Chauchat only earned its Rock Bottom reputation when the Americans entered the war and were issued Chauchats that were hastily designed to take the significantly more powerful .30-06 cartridge. The gun had trouble extracting the long, straight cases and was hardly up to the stresses of the powerful round. To make matters even worse, somebody managed to screw up the conversion between English (US) and metric (French) units, so the magazine and chamber for the .30-06 version were the wrong size (this error wasn't even realized at the time; it wasn't until private testing decades later that it was discovered, hence the error never having been corrected). It was so poor that it was used only as a training weapon, and virtually all of them were destroyed after the war. US troops were then issued 8mm Lebel-chambered Chauchats, which were considered better than no light machine gun at all (but only marginally sonote ).
- One very significant issue for many people firing the Chauchat is caused by the long-recoil action: It is very easy to "limp-wrist". All recoil operated guns require being held firmly in order to properly cycle, or else too much of the recoil force goes into your body rather than the action, causing it to not cycle back far enough. Limp-wristing is well known to anyone with experience firing any Browning-style short-recoil pistol, like the M1911 or Glock. However, the issue is massively magnified in the Chauchat - the 8mm Lebel is not a light cartridge, and due to the heavy barrel and action travelling quite far due to the long recoil action, the gun wants to jump around all over the place. A very tight grip is necessary to keep it under control.
- Post-war analysis showed that around half the Chauchats used in combat were dropped as useless by their operator before they could fire off an entire magazine; it wasn't uncommon for American auto-rifle squadrons equipped with them to give up on that and switch to M1903 Springfields instead. It jammed often and easily due to the above mentioned reasons, and the only way to unjam it was complete dis and reassembly — less than recommended in the heat of battle in no-man's-land. One may as well have charged into that trench with nothing but a knife, because it would likely outperform the Chauchat when it turned into an overly-elaborate and cumbersome metal club.
- In the Spanish Civil War, when the left was desperate for anything that would fire, they still advised men with Chauchats to just throw them away. Note, though, that this was probably more due to a human error than the mechanical problems. By this point in time, the aforementioned "left" had all but run out of professional soldiers or discipline. Getting the hooligan militia that made up their ranks to both learn how to properly handle a Chauchat and handle it correctly in battle would've probably been a miracle, and its' use by professional Western Allied and German soldiers in WWI and Nationalist ones in the Spanish Civil War proved the real problem with the Spanish left.
- R. Lee Ermey tested a Chauchat for the TV show Lock 'n' Load and discovered that even on a modern gun range it invariably jammed after four rounds every single time. This could easily be caused by French surplus ammunition. Even in reliable guns like the Lebel and Berthier, misfires and hangfires are absurdly common even by old surplus standards. And, seeing as modern commercially loaded 8mm Lebel is virtually nonexistent, most shooting will be done with old surplus.
- Non-television firearms experts have conducted analyses and found that the Chauchat's poor reputation is largely undeserved, aside from the .30-06 conversion and poor open-sided magazine design. It is, however, well-documented that the Chauchats manufactured by Gladiator (a bicycle company with no prior firearms experience) tended to have manufacturing errors that were not present on those made by SIDARME. Unfortunately, SIDARME accounted for less than 10% of the production, meaning that most Chauchat gunners had to either learn to manually compensate for the typically misaligned Gladiator sights, or if they were mechanically inclined enough implement their own field repairs to correct them.
- A less famous, but no less awful example of light machine gun design was the Italian Breda 30 which saw service in World War 2. Its numerous design faults teamed up to make it an extremely unreliable weapon, especially in the desert conditions of North Africa. The gun attempted to use a blowback system of operation to reduce complexity, but using simple blowback for a high pressure rifle round required the rounds to be oiled to prevent them from being ripped apart during extraction. This didn't always work, leaving the front part of spent casings hopelessly jammed in the chamber, plus the oil attracted dirt into the working areas of the weapon, causing another type of jam. Furthermore the gun used the same bad idea as the Chauchat with an open magazine that invited even more dirt into the operating mechanism. Furthermore the closed bolt design reduced air circulation and also put rounds in the chamber at risk of cooking off which could injure or kill the gunner. Oh, and the magazine was non-detachable, making use of special 20 round strips to reload it which had the effect of drastically slowing the rate of fire. So even when the gun actually managed to fire one would wind up spending most of their time reloading it.
- The worst thing about the Breda 30 is that it was not the worst weapon of the Italian Army in the war. That would be the Fiat-Revelli Modello 1914 heavy machine gun: designed before World War I, it had the same problems as the Breda 30 (unsurprisingly, the Breda 30 is based on the 1914), was water-cooled (increasing the weight), had an oil pump to grease the rounds (thus making it even more complex and heavier), and by 1940 it had been out of production for twenty years, thus adding the troubles of age and wear. The issues were ironed out with the later Modello 1935, an improved model with air cooling, no oil pump and, most importantly, belt-feeding. Except it jammed worse with un-oiled rounds, so they had to put back the oiler.
- Given all the above, this was surprisingly subverted by the Beretta Model 38 and the Variara submachine guns. The Model 38 was widely acclaimed as the best submachine gun of World War II, especially since it was capable of firing both the standard 9mm Parabellum of the era and the more powerful "Cartuccia Modello 38" version, while the Variara holds special mention for having been made exclusively in clandestine backyard workshops to arm the Italian partisans, as well as, ironically enough, using the same bolt and firing mechanism as the troubled Sten gun.
- Also Subverted by the Perino Modello 1908 machine gun, a contemporary of the Fiat-Revelli prototype that was reliable as the famous Vickers machine gun (kept in service until 1968 because it was just that good) and having a variant of the clip mechanism superior to the ammo belt (the clips were in an open box that obtained similar results to the belt, but a soldier would be able to place new clips on its top to keep continuous fire while the belt would have to be changed but was faster to change once empty, and the spent cases would be replaced in the clip and ejected with it, avoiding to get the spent clips underfoot or hitting troops and allowing an easier recover of the clips for reloading. On the other hand, it was heavier), with the only issue, excessive weight, being solved by the inventor himself. So, why the hell was it not mass-produced beyond the initial 150 weapons commission and adopted? Because engineer Revelli (inventor of the other machine gun) was on the commission to decide if production of the Perino would continue, and the opinion of the rest of the commission was swayed by the Fiat company's political power.
- The Enfield L85 (better known as the SA80) was basically Britain's way of telling the United States that when it came to the design of infantry weapons, "anything you can screw up, we can screw up bigger"; the design itself was fairly sound, albeit rather maintenance-intensive and complicated to disassemble, but had to be built to extremely fine tolerances. Unfortunately, the initial in-service version was the last project undertaken by the Royal Small Arms Factory, whose workers had recently learned they were all going to be laid off. The reader can doubtless imagine the effect this had on their workmanship. Problems included: spontaneous malfunctions, firing pin breakage, safety breakages, magazines spontaneously dropping, and these are only a few out of the 50 listed in the report. This is what happens when a country forces through a new assault rifle just for the hell of it. Heckler & Koch managed to (mostly) salvage the design in the upgrade to the A2 standard, though the light support weapon variation is still not seeing much use at all except as a rarely-used DMR (its initial role is instead being fulfilled by the L110A1).
- Real Life military use of an unstable gun as an effective weapon: In World War II, the standard British SMG, the MkII Sten, was prone to accidental discharges when dropped; it could in fact empty its entire magazine that way, an attribute occasionally used to turn it into a field-expedient grenade substitute. Later models improved, at least to the point where you no longer took your life in your hands by merely being in the same room as one with a round chambered, but would still misfeed at the slightest provocation.
- This is partly justified in the fact that the Sten was designed to be produced cheaply and quickly. Because Britain needed to replace all of the weapons they left behind during the evacuation of mainland Europe, quality took a backseat to quantity.
- Most sources mention the biggest issue with the Sten wasn't the mechanism, but rather the magazines (which were the same magazines used by the MP40, used by Britain's principal enemy at the time). Indeed, the MP40's magazines were prone to spring failure when fully-loaded with 32 rounds, though most soldiers got around that by only loading 28 or 30 instead. Another problem is that the Sten fed from the side, rather than from beneath like the MP40 (and by extension, like the magazines were actually designed for).
- This was a case of win one, lose one, as the advantage of using the same magazines was that because of the weapon (and money) shortage, using the existing magazines as their enemy meant that ammunition was always easy to come by and proved very effective for espionage and resistance units (such as the SOE).
- It's not only that but the first Sten was made with no safety measures, especially with the bolt in forward position (if it was in back position, the cocking handle could at least be put on a notch in the gun's body).
- A closer example is, in fact, that so many game/film characters hold the MP40 and Sten by the magazine. In reality, that is a very good way to make them jam (which is why the Haganah and IDF, which relied on Sten guns during and in the run-up to the Israeli War of Independence in 1948, drilled it into their soldiers never to do this). The proper "foregrip" of an MP40 (which is otherwise a highly reliable SMG) is to hold the magazine well firmly with the index finger and thumb. Or between the mag well and the trigger guard. The Sten? Well, there's not really anywhere comfortable to grip (with either hand) on the MK II and Mk III versions. Unless you have the Canadian Mk II, whose wire stock/grip at least doesn't look like something a sadist would design. Wrapping leather around the barrel shroud and the grip might be a good idea, though.
- The Lanchester SMG was a British copy of the German MP28 SMG (an evolution of the WW1 MP18), that was introduced during the aformentioned desperate rearmament period following Dunkirk. While it was a robust and well made weapon, it did have an unfortunate tendency to fire off bursts whenever the butt was given a hard knock while it was cocked and loaded. This was due to the way the blowback action was designed (open bolt with large mainspring holding the bolt under tension), not due to manufacturing errors.
- The PIAT, a handheld spigot mortar designed in WWII to eliminate the telltale and lethal backblast from other anti-armor launchers suffered from this. Whilst the mechanism was incredibly simple and almost never jammed, it was a bastard to cock, requiring over a hundred pounds of force to do so. To help with this, in combat, only the first round needed to be cocked — subsequent firings would use the propellant to blow the firing pin backwards, cocking the weapon. In theory. However, unless the weapon was held very tightly, the pin wouldn't be pulled back, and the firer (who in this situation would have been knocked off his feet by the immense recoil) would have to re-cock it himself, which was not fun or safe even without enemies shooting at him.
- The Australian-designed Owen, which was supposed to replace the Sten and the US Thompson in Commonwealth forces, had a similar problem made worse: even with the safety engaged, it was still known for accidental discharge. The Aussies didn't care, though. They considered its near-immunity to jamming far more important.
- There is an urban legend among the German Bundeswehr that this issue is present with the IMI Uzi. The legend goes that, in Close Quarters Combat training, soldiers are advised on how to use the gun as a makeshift "roomsweeper": load a magazine into the gun, cock it, release the safety and throw the gun into a room/down some stairs/down an elevator shaft. This practice is neither found in any official training manuals nor has the gun ever been used that way. The Uzi actually has global renown for being a highly reliable, accurate, and controllable submachine gun.
- The German MP38 submachine gun (often incorrectly called the "Schmeisser" — it was actually an Erma product) originally was prone to accidental discharges if it was dropped or bumped on its rear end, such as when the soldier carrying it hit the butt on the ground when jumping down from the back of a truck. The bolt would "bounce" back against the recoil spring (compressing the spring), and then forward under spring pressure, chambering and firing the top round in the magazine. A "quick fix" was a leather strap that looped over the bolt handle to secure the bolt in the forward (uncocked) position. The later MP40 version (the one that accounted for most of WWII production) had a safety notch to turn the bolt handle up into to lock it in place, to prevent this from happening.
- The Nambu Type 94 Japanese issue pistol was notorious for firing if touched wrong (exposed sear). Japanese officers purchased their own guns, quite a few did not buy nativenote . Japanese NCOs, on the other hand, had their pistols issued to them by the military.
- It was only a substitute standard pistol taken into military service due to shortages of the standard Type Taisho 14 8mm automatic pistol, which replaced the older "Papa Nambu" in the 1920s. The Type 94 was apparently originally designed as an export item for commercial sale overseas; one can only assume that the designers anticipated selling them to fairly gullible customers. While there's no known instances of a Type 94 going off while the safety is engaged, it was probably a good idea to carry without a round in the chamber, just in case. The standard Type Taisho 14 pistol was perfectly safe (though rather underpowered compared to most other combat handguns of World War II, much like the rest of Japan's arsenal at that time) — as long as you remembered not to leave the locking piece out of the mechanism after field-stripping and reassembling it. It would fire without the locking block, exactly once; the result would be the bolt immovably jammed in the full-recoil position (not very useful in a firefight). For cultural reasons, Japanese officers tended to charge with a sword in hand anyway.
- The Type 14 Nambu itself was an adequate enough weapon, though wholly unremarkable. The 8mm round it fired was both underpowered and ill suited to the weapon, causing it to hiccup and jam after more then a few shots; otherwise it would have been a decent weapon. Other weapons like the Type 26 revolver were just horrible in every way. Essentially a hammerless Webley break action revolver, it fired a 9mm round that lacked any punch at all and was a proprietary round, making it difficult to supply in the field. Other distinct merits was its horrendous trigger pull and an unfortunate tendency to have its barrel and chamber misaligned, causing a catastrophic misfire when doing so. If that wasn't worrying enough, a special tear gas grenade attachment was developed for it as well.
- The Japanese had also experimented with making a 7.7mm copy of the American M1 Garand, the Type 5. It ultimately ended production at about 250 units, none of them seeing service outside the Battlefield series of video games and most of them not even being assembled, due to frequent jamming. Given the abysmal condition of Japanese industry in 1945, and the fact that the war ended before they had any real chance to work out the bugs in the design, this isn't surprising.
- WWII-era Japanese weapons in general tended to be horrible, with the noted exception of the excellent Arisaka rifle. Their machine guns in particular tended to be overweight, underpowered and unreliable, especially when compared with their opponents' Bren guns and Brownings. R. Lee Ermey tested a Type 92 on Lock n' Load and the gun not only jammed, but apparently a case or the awkward metal ammo strip fragmented and cut his knuckle. "It hurt me!"
- The Type 11 Light Machine gun had similar issues stemming from its magazine design. The weapon used a unique hopper design to feed ammo from six of the same five-round clips used by the famed Arisaka rifle. This allowed users to top off their ammo without having to remove the magazine, but it also gave it a tendency to jam with the slightest amount of dirt, an undesirable characteristic in the mud and grime of the Pacific Theater. Additionally, the side-mounted magazine made the weapon unbalanced and difficult to use when fully loaded (also a problem with the British Sten).
- Contrary to the above, the Japanese actually did produce a quality Machine gun. The Type 96 and the later updated 99 LMG (based off the Czechoslovakian ZB vz 26, an influential LMG at the time that inspired the excellent Bren LMG as well) was a notoriously feared weapon on the battlefield, particularly for its accuracy. A skilled operator could lay down a deadly field of fire from a concealed position, (especially on Iwo Jima where a number of them made short work of a fire team or two.) in fact a special 2.5X telescopic site was sometimes attached to create essentially an automatic sniper rifle! Unfortunately for the Japanese, they were never fielded in a substantial enough quantity to make a difference in a battle, and because both weapons required vastly different cartridges to operate, made logistics a nightmare.
- The Vietnam-era original M16 assault rifle was infamous for jamming at inopportune times, to the point that soldiers grabbed AK-47s off dead Vietcong when they got the chance, even when ordered not to. There is a litany of reasons known for the problems, primarily bad design decisions, most notably using a direct impingement gas system, not chroming the chamber or bore, having very narrow clearances (clearances = space between parts — tolerances = acceptable size and weight variations for parts), having an excessively complicated bolt design, using a spring-loaded extractor, and lacking any way of clearing malfunctions other than by disassembly of the rifle (there's a story quoted on Wikipedia of a Marine Corps platoon armed with the initial model that lost 53 of their 72 men in one firefight; when they went back to check the dead, almost every single one of them had their rifles disassembled from trying to fix a jam). Not only these, but also some intentional sabotage by the Army Ordnance Board, who wanted to go back to the M14 (itself not a bad design, but between being heavy for a rifle, but light for a battle rifle, it was not suited to replace the entire WWII-era arsenal as the military had hoped), a lack of cleaning kits, and errant claims that the gun "cleaned itself" (it didn't - in fact, due to the aforementioned direct impingement system, the gun more or less made itself far, far messier by ejecting debris into the chamber). The cleaning kit issues were fixed relatively quickly, and the improved M16A1 was introduced in 1967. While the worst of the reliability problems were mostly over with, with the exceptions of the chamber and bore now being chromed, and there being a way to clear the weapon without dissassembly, many of the fundamental design flaws still persist to this day. These are the words of a U.S. infantryman on why the M16, and by extension, all AR-family weapons are fundamentally deeply flawed.
- The M4, which is the modern carbine based off of the M16, is actually even less reliable than its big brother, especially when accessories are added. Reliability issues still persist with the entire AR family. They are mostly encountered in military settings, given the harsh demands that war places upon them. They can generally endure rather nasty "torture tests", but accumulated strain and abuse will cause failures at some point, even with fairly mild usage.
- The extremely-similar HK416 has a tendency to be unreliable in cold weather (such as the charging handle becoming stuck), thanks to the addition of a gas piston to a design that was not meant to have any solid parts within its gas system, which creates a new slew of problems. Ironically, the reason for the gas piston system was to make the gun less prone to jamming in dust-prone environments, especially deserts.
- The Barrett M468, meanwhile, had the opposite problem - it continued to use the M16's direct-impingement system, but only managed to exacerbate the problems associated with it due to its heavier chambering for the 6.8mm SPC cartridge. The later REC7 is both piston-driven instead, so as to make using 6.8mm bullets with it actually viable, and also convertible to 5.56mm.
- A mildly famous incident with a marked Truth in Television of a horrific jam that literally disabled the gun occurred at IPSC Nationals several years ago. At one stage, a fired case ejected from the pistol, bounced off the edge of a quarter-inch sheet of plywood the shooter was standing next to, and as the next round fired and ejected the first case fell into the open ejection port — backwards — and was pushed forward into the chamber, while the next round attempted to feed. The weapon was completely locked up and required significant work to be cleared, with no small amount of trepidation as there was still a live round crammed halfway into the action even with the magazine removed.
- In the Old West, experienced horsemen would only load five rounds into their single-action revolvers and have the hammer resting on the empty chamber. That was because while tightening the cinch on their horse's saddle, they would hook the stirrup over the saddle horn. If the stirrup came loose it could fall back into place and strike the pistol's hammer, causing it to discharge if there was a loaded round in the chamber. This defect in single-action revolvers was not completely corrected until the Ruger New Model Blackhawk revolver came on the market in 1973. Despite the fact that it was certainly known how to correct this flaw much earlier, since double-action revolvers had since the 1890s included a transfer bar, nobody had bothered to implement it in the single-action designs. Even today, many modern reproductions of the Old West revolvers exclude the transfer bar in order to be completely faithful to the original designs.
- There's a story that during his early days, Wyatt Earp once nearly shot himself by mishandling a single action revolver. Back then, handguns definitely were reliably unreliable.
- "Load one, skip one, load four" was a common mantra of the Old West when it came to loading your gun, for just that reason.
- Another story has Billy the Kid use this to get the drop on a bounty hunter. Billy, his identity unknown to the bounty hunter, was playing cards with the guy. He asked to see the guy's gun and offered his own just to show he wasn't going to try and rob him. Carefully setting the cylinder back one space, he gives it back. After a few minutes he told him who he was. They both drew and fired, with the bounty hunter firing on the empty chamber.
- In the days of cap-and-ball revolvers, Remington implemented a way to safely carry their New Model Army with all 6 chambers loaded by milling groves between the chambers that the firing pin could be rested on, and thus the hammer being forced down wouldn't land it on one of the percussion caps. Nobody, not even Remington, did this on the later cartridge-firing single-action revolvers, for whatever reason.
- Colonel William Fairbairn, armed combat instructor for U.S. and British special forces during World War II, was an advocate of the semi-automatic pistol, but placed no faith in safeties. In his books on the subject, he recommends carrying the pistol with an empty chamber, and training to rack the slide as part of the draw action. Time permitting, he also advises cutting off the trigger guard and disabling the safeties, which makes the gun faster to use by making it Shur-Fine for anyone who doesn't follow Fairbairn's system.
- In modern times, racking-while-drawing is known as the "Israeli draw", because leading up to the 1948 war, the incipient IDF's arsenal was made up of so many different weapons of varying designs and reliabilities that this was the only safe way to train soldiers who might have to use an unfamiliar weapon.
- It should be noted that with most 1911-style pistols, with which a variant of this is a somewhat popular method of carryingnote , chambering a single specific cartridge multiple times can seat the bullet further into the casing than it should, which can cause dangerous pressure failures if that round is actually fired without reseating the bullet.
- As it happens, this Trope is Older Than Steam: Every firearm made up until the advent of percussion ignition would often misfire in normal conditions, or fail to work at all in bad weather. And it goes the other way too: they could also accidentally fire on their own, or would only fire several seconds after pulling the trigger.
- The Ross Rifle, designed as a substitute for the Lee Enfield, was used by the Canadian military during WW1. The Ross was easier to dis/reassemble and a pound lighter than the Enfield, as well as being more accurate. It also was prone to the bolt deforming or falling out, it jammed with the slightest dirt, and the bolt occasionally threw itself out of the gun when fired. Needless to say, the soldiers usually ditched them for Enfields as soon as they got to Europe. Eventually, many of them ended up being used for basic marksmanship training (both in Canada and in the US), where their shortcomings weren't an issue and their use freed up more battle-worthy rifles for the front lines.
- The Ross Mk III bolt could be re-installed after field-stripping with the bolt head turned halfway-round (180 degrees) from its correct position. Done this way, the bolt would close, but would not lock, but the rifle would still fire, ejecting the bolt backwards with great force. While testing has shown that the bolt won't be ejected from the rifle, given where a shooter's eye will normally be that wouldn't have saved them from getting a large piece of metal in a very bad place. This was a fault in the design that was never entirely corrected, and one of the major reasons the Ross had a very short tenure as the standard service rifle of the Canadian Army.
- There was an Italian bolt-action rifle manufactured during both World Wars with a similar design flaw.
- Part of the problem was the use of a straight-pull bolt mechanism: this allowed the Ross a shorter cycle time than even the mighty Enfield, but also required a complex system of cams and grooves which became ridiculously stiff with even the slightest mud contamination. Stories exist of soldiers resorting to stamping on the bolt handles of their rifles and still failing to budge them an inch.
- All that said, because the Ross was a fair bit more accurate at range than the Lee-Enfield, it remained a fairly popular rifle for Canadian snipers, who tended to do a better job than the average soldier at keeping their rifles clean and were a lot less likely to assemble the bolt in reverse, thus negating the primary flaw of the design.
- The German StG-44 is widely considered the purveyor of the assault rifle concept which dominates military infantry standard-issue today. However, due to the war going on at the time, the materials used to make the gun were often of poor quality and production was necessarily rushed; tests done by the British around the end of the war revealed that the bolt could be immobilized by simply pinching the sides of the receiver, and that the entire gun could be rendered totally inoperable by simply propping the gun up and then pushing it over. It was deemed too heavy a rifle with too fragile a bolt and receiver to change the war by Allied Intelligence, but it was well liked within the German military, even with the shortcomings.
- Similarly, the FG 42's action was so delicate that full-auto fire could potentially break the gun apart. Its action was also the basis for the Vietnam-era M60 machine gun, which suffered from a similar problem as noted below.
- The IMI/Magnum Research Inc. Desert Eagle also has a higher than usual tendency to not cycle properly, one of many reasons why it's loathed by some gun enthusiasts. Manuals for later models include a line about how failure to cycle can be caused by the operator not holding the gun firmly enough, resulting in the whole weapon moving backwards instead of the slide. So as far as they are concerned, the problem is Shur-Fine wrists.
- That problem is known as "limp-wristing". Any autoloading pistol, if you don't resist the recoil enough and simply let it move backwards with your hand, will jam. The reason the Desert Eagle is getting this bad reputation is because it fires big-ass rounds, and big-ass rounds means huge recoilnote , which results in the gun being harder to handle properly than your usual 9mm, causing a jam. Many Desert Eagle owners who can get a good grip and resist the recoil usually say that it's a reliable enough weapon.
- It can also happen if you get wimpy rounds that don't move the Desert Eagle's heavy slide back enough. Unlike with .44 and .357 Magnum revolvers, the Desert Eagle when chambered for one of those rounds can't be used effectively with .44 or .38 Special, unless the springs are swapped out to account for the much weaker rounds. Otherwise you'll have to rack the slide manually for every shot, which obviously defeats the purpose of a semi-automatic.
- The .44 and .357 Magnum variants fire revolver rounds. Semi-automatic weapons, whether recoil or gas operated, have a much narrower pressure curve in which the weapon can be safely operated, as opposed to the time-honored "if it fits in the holes, shoot it" method of determining safe revolver rounds.
- Early in the Desert Eagle's life, it wasn't widely understood as being closer to an M16 in action, rather than a normal automatic pistol or revolver. The direct gas system taps gas from behind the bullet using a port drilled into the barrel. Most revolver rounds are all lead, without a gliding metal jacket like all automatic pistol or rifle rounds. The soft lead would get shorn off and clog the gas port, causing a failure to cycle and being a complete pain in the ass to clean out. When using jacketed rounds, as recommended by the manufacturer, the gun works just fine.
- The M50 and M55 Reising were submachine guns issued to the Marines during World War II as a replacement for Thompsons, which were in short supply and too bulky and heavy for constant jungle patrols. The Reising was accurate and reliable in trials; unfortunately, the trials were designed for a civilian law enforcement weapon, not a military one. While a cop would have no trouble with his gun (since he'd only be using it in his own city, and would be keeping it in storage most of the time), the complex internals of the gun would easily foul and jam in the sand, mud, and salt water of the Pacific campaign. The design of the magazine meant that it could also easily be slightly damaged and make the magazine useless. The folding stock of the M55 would often not stay in place while the gun was being fired. It would even jam just from too-humid air, which rusted the firing pin. As if this wasn't enough, the weapon was cocked by pulling back a tab attached to the bolt....at the bottom of the handguard. In other words, a rapidly reciprocating piece of metal right by your delicate fingers. The cocking piece was inside the handguard (which had a groove cut into it for that purpose), meaning that your fingers were probably safe...unless you accidentally slipped them into the groove instead of around the side. But this provided the most common of the Reising's many opportunities to jam; if the groove filled with mud, the cocking lever would be blocked from moving. To make things worse, the Reising (amazingly for a weapon of mid-20th century vintage) had parts that didn't properly interchange from one gun to the next, and replacement parts needed to be hand-fitted. Not surprisingly, Marines would take almost anything else and dump their guns as soon as possible. Lt. Col. Merritt Edson commanded his battalion to dump all of their Reisings in a river so they could draw better guns. One NCO reportedly "decommissioned" his gun by smashing the stock over the head of a rather unruly prisoner in the brig. After the Marines' dismal experience with it in the Pacific, the remaining Reisings were either foisted off on Canada and Russia, or assigned to duty they were more suitable for: issue to stateside police, factory guards and Coast Guard patrols.
- The FAMAS F1 was designed a few years after France withdrew from NATOnote , in turn allowing France to design a new infantry weapon without being forced to comply to NATO standards (though it was preferable given the Cold War context). The result was one of the most mind-bogglingly weird and boneheaded assault rifles designs of the twentieth century, not helped by a laundry list of poor decisions. The downsides stem from the fact the FAMAS F1 has a higher barrel twist rate than an AR-15/M16 family rifle, optimized for the locally-produced steel-cased 5.56mm "F1" cartridges; as time passed and production of the rifle and ammunition ceased, the French military was left sitting on their reserves. As operations in Afghanistan and Chad showed, when a standard FAMAS F1 was fed with American-issued 5.56 NATO ammunition, the effective range would drop to an abysmal average of 50 meters (about 165 ft; a modern 9x19mm pistol can equal this, for context), effectively making the rifle useless. Because France was not anymore able to produce this proprietary ammunition locally, they had to contract a manufacturer in the Emirates, however ammo purchased from them turned out to be of low quality and poor manufacture; coupled with an awkward, proprietary 25-round magazine instead of STANAG-compliant magazines (some genius thought it would be a great idea to go with cheap magazines designed to be thrown away after being emptied once...and then later some other genius decided it would be a great idea to save money by reusing the non-reusable magazines), this effectively killed the F1 as an effective, modern-day infantry rifle. Nearly all of those problems were fixed with the more modern variants, such as the FAMAS G2, which has a STANAG magwell and a barrel with the same twist rate as an M16/AR, allowing it to shoot 5.56 NATO proper. However, the G2 was never purchased in high numbers by the French military (only the Navy has officially adopted it), citing an ever-shrinking budget, and an administration unwilling to replace the some 300,000 F1s equipping the armories; there's talk of the French military giving up on the design entirely and adopting an Australian version of the Steyr AUG in the future.
- As the quote goes, "You ain't a SEAL until you've eaten Italian steel." The early production run of the Beretta 92F pistols for the US Government had an issue where the slide would fly off the frame during shooting, causing injury to at least one SEAL. While several different reasons were claimed (high round counts, overpressure ammunition), it was eventually discovered that a component that was supposed to be replaced after 25,000 rounds was failing around the five thousand mark. Free replacement parts were sent out and Beretta, in the upgrade to the 92FS, redesigned the hammer to prevent the slide from flying rearward in the event that the locking block fails. The 92FS has gone on to be a fairly satisfactory military and police sidearm, but the Navy SEALS still switched to the SIG P226, and the other branches keep trying to replace it with a 1911-based sidearm every couple of years; in official American military surveys about troop experience and opinion regarding weapons, the M9 rated the lowest, with a significantly majority of users distrusting it.
- Another issue with the 92FS is that most US military-issue magazines for it were given a "sand-resistant" coating for combat in the Middle East - a coating which, for some reason, actually attracted more sand onto and into the magazines. Genuine Beretta-manufactured magazines do not have the coating or the issues it causes.
- The French MAS 44, 49 and 49/56 rifles are been known to slamfire due to their free-floating firing pins getting stuck in the forward position, though only with commercial ammunition. The free-floating firing pin was never a problem with French military ammo, which has unusually hard primers, and in military service they were famous for extreme reliability. But the 7.5x54mm ammo now produced for civilian sale has standard primers, and even a light strike can cause them to fire. Some owners solve this problem by grinding about half a millimeter off the tip of the firing pin, while others prefer to load their own ammo using the military-style hard primers that the gun was designed for. Of course, these designs also have the problem of being direct impingement designs.
- The Russian SKS rifle (see the MythBusters episode above) also had a free-floating firing pin, which led to similar issues; earlier models had springs keeping the firing pin from getting stuck forward (a feature that was eliminated as a cost-cutting measure), and there are after-market kits to modify models that aren't already set up that way..
- The Carl Gustav M/45 had an unusual safety and was prone to going off when dropped.
- Pistol-grip forends on pump-action shotguns commonly show up as a cool looking accessory in film, television, and videogames, making a shotgun nearly resemble the old dual pistol-grip M1928 Tommy gun of 1920s gangland infamy. In real life, these nearly useless accessories jut out at a cumbersome angle from a critical operating part which can make cycling the weapon difficult, provide poor ergonomics for supporting the hefty forward weight of a shotgun (which carries its ammunition in a magazine tube right over the slide), and, worst of all, create a risk of twisting or bending the gun's action bars, preventing the bolt from seating in battery or damaging the weapon. Cheap aftermarket accessory makers sell them anyway to the uninformed.
- The Bushmaster ACR was recalled in October 2010. Bushmaster learned of a design flaw in the rifle that could cause it to fire multiple rounds with only one trigger pull.
- The M60 machine gun, despite being heavily inspired by the brilliant MG 42, has some unbelievably baffling design flaws. These include: the bipods all being integrally attached to the quick-change barrels, meaning that gunners can't keep them on target during barrel changes. There was no way for gunners to change the hot gun barrel without physically grabbing it with their hands, which necessitated the issuing of asbestos gloves to gun crews. It was prone to tearing the rims off of cartridges during extraction. The barrel latch was very easily to accidentally hit, therefore making it very easily to unintentionally drop the barrel. It was both very easy and very possible to unknowingly reassemble the gun improperly, during either maintenance, or barrel changes, by putting in the gas piston backwards, turning it into a single shot, straight pull, bolt action weapon. Cocking the gun without any ammo in the action will damage the feed system, as will closing the top cover if the bolt is in the wrong position. The sear and operating rod are easily worn down, meaning that the gun can suddenly runaway completely even when the trigger has been released. Even worse, the safety and the trigger group are both at least partially housed within the pistol grip, which is only held on by a single pin and retaining clip. These can both be easily damaged or fall out during normal use, resulting in the whole trigger assembly falling off of the gun. If such occurs while it's firing, it will continue to fire until it either jams or runs itself out of ammo. The barrel and gas system cannot be separated. The gas system cannot be adjusted, meaning that it cannot be changed for differences in ammunition or fouling. And finally, the barrels all have unadjustable front sights, meaning that it is impossible to consistently hold zero between different barrels. Most of these issues got worse with wear, so the gun tended to perform passably if recently refit, but degrade horribly over time. It's commonly said that an M60 would literally beat itself to death. So much so that even the receivers got labelled as replaceable partsnote - only the trunnion was considered to be long lasting.
- The Colt Double Eagle handgun was essentially a multi-caliber modernization of the classic M1911, but overall failed to find a market. Part of the reason very well could have been a lack of proper quality control - this story details a pair of shoddily-made 10mm Auto Double Eagles, one of which exploded upon firing due to an improperly-cut chamber, and then another that somehow had a factory-installed .45 ACP barrel.
- Even the memetically tough AK series of rifles can suffer from this, generally due to wildly differing build quality. You see, whilst the ones coming out of foundries in the former USSR or the more advanced Eastern Bloc nations will generally be of a high-standard, because Mikhail Kalashnikov never patented it - he couldn't - hundreds have been produced in underground factories or back-street metal shops. The soundness of the design can only do so much for abysmal build quality.
- The FN MAG, whilst highly regarded as a general purpose machine gun, sometimes suffers from "runaway gun" during which the weapon continues to fire after the trigger is released. Users are trained to twist the belt to stop the rounds from feeding.
- "Runaway gun" is in fact similar to a problem that has plagued machine guns since their inception, known as "cook-off". This is where the action of the gun is so hot that rounds will keep firing even without the bullets' primers being struck.
- Some earlier versions of the FN Minimi can accept STANAG magazines in place of the usual ammo belt. Military users typically only do this when they are totally out of belted ammo, however, as the weapon's extremely high rate of fire is too fast for a STANAG magazine's spring to effectively feed rounds into it. Later versions remove the STANAG magwell entirely to cut down on weight.
- Firearms fitted with blank fire adaptors for the purpose of exercises are a lot less reliable than non-adapted firearms firing live rounds, as much more carbon builds up in the weapon due to the barrel being essentially blocked off to allow the gas expelled from the blanks to operate the action properly as opposed to being expelled from the barrel.
- Any firearm that lacks a manual safety catch, like revolvers or most Glock semi-automatics, require even stricter than usual adherence to proper trigger discipline.
- "Safe-action" handguns get the moniker from the fact that it is very difficult for them to fire by accident while in retention. The only safety catch to stop them from firing is the trigger.
- Most manufacturers compensate for this by giving the gun a heavy trigger pull (as high as eight pounds in some models). Unfortunately the trigger spring has a tendency to weaken with regular use, making it far easier to accidentally discharge.
- Thanks to Britain's strict firearms laws, the most readily available black-market handguns are literal Shur-Fine Guns, either ancient First or Second World War souvenirs stolen from some veteran's attic or crude Metro 2033 or Chechnyan-style derringers kludged together from starting pistols or BB guns. Actually firing one takes more balls than brains, as most such conversions will fire exactly once.
- The mechanism on the bolt of a bolt-action rifle that yanks the spent bullet casing out of the barrel will slowly wear out with age. With an old enough gun, it will be nearly incapable of pulling the casing out, forcing the user to repeatedly bang on the gun to loosen up the casing and then slam the bolt back and forth in order to try and get the bolt to catch the casing. In some extreme cases, the user will have to get a screw driver or a knife and try to wedge it into the paper-thin area between the front of the receiver and the rim of the casing.
- The bolt of a Mosin-Nagant can be disassembled for cleaning. However, since the rifles were built with looser tolerances than most, the firing pin may protrude a different length than before after reassembly. There's a screw in the back to adjust this and a hand cut notch where the screw should align to. However, if you adjust the protrusion too shallow, the round won't fire. If you adjust the protrusion too deep, the pin will pierce the primer and you may get a face full of combustion. That said, most Mosin-Nagant owners never disassemble their rifle's bolt and few actually know why that notch on the back exists.
- The Mosin-Nagant's safety consists of pulling back on the bolt when it's closed and rotating it counter-clockwise. This is reportedly pretty tough to do so that few people will bother doing so, assuming they even know about it since said safety's so unintuitive most of the rifle's users to this day aren't even aware of it.
- Part of the reason why many guns are of closed-bolt design, where the bolt in the "ready to fire" position is forward, as opposed to the open-bolt design, where the bolt is held back, is because the chance for an accidental discharge at best or a runaway gun at worst is much higher. What's stopping the gun from firing in an open bolt design is a sear the trigger pulls out of the way, as opposed to a hammer dropping on the firing pin.
- The German Gewehr 41 semi-automatic rifle used what was known as a gas-trap system. One of the requirements in design was no gas tube was allowed to be drilled into the barrel for fear of premature wear and tear (and it was a legitimate concern back then). There was a gas trap at the muzzle end which would force some of the gas against an exterior piston which would cycle the action like normal. The problem was that carbon buildup was greater at the muzzle and the piston would be covered with it to the point that the gas could not overcome the friction of the carbon buildup keeping the piston in place.
- Some youth rifles have a tendency to go off if the butt takes too hard a knock. a documentary on Channel 4 told the story of a 9 year old boy who fell victim to this fault when he slipped, accidentally shooting himself in the head. The boy's father demonstrated this by loading the weapon and slamming the butt onto a plank of wood, setting it off. Disturbingly, this is a rifle designed for use by children.