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- The Buster Gundam from Mobile Suit Gundam SEED is of a particularly interesting note because it features this except with two guns. Individually, both guns have a separate function. The gun on the right is a railgun while the gun on the left is a beam rifle. The two guns can be docked with one another by plugging the barrel of one into the butt end of the other, which will power up the gun in front. The railgun's powered up form is an anti-armor shotgun, while the beam rifle's is a high-energy, long-range beam sniper rifle.
- A later model, the Verde Buster, mounts the cannons on the shoulders so that they can both be used. However, the docking arms used to mount those guns are given shotguns which have sword blades that unfold out of them.
- Daisuke's gun from Heat Guy J may count. The gun itself only has one particularly notable feature, a retractable hook at the bottom of the grip used for close combat. However, it can use a variety of ammo, including standard bullets, presumably a silver bullet, explosive Red Tab bullets, and electric Blue Tab bullets that stun those they hit.
- A one-shot character in Kirby of the Stars wields a machine gun/sword/flamethrower.
- Most characters in Web Animation/RWBY sport weapons that are great examples of Swiss Army Guns.
- Judge Dredd's Lawgiver, which has specific rounds for basically any given situation.
- In Jon Sable, Freelance, Jon carried a large bore, multipurpose stainless steel revolver, that had a resemblance to an antique pepperbox revolver. The weapon could fire underwater, fire rifle shot, arrow/bolt type projectiles and a multitude of other loads, such as tear gas, explosive, and tranquilizer. This was a Real Life weapon designed for Navy SEALs that never went beyond prototype.
- In a short story of The Punisher, Frank interrupted a weapons deal about a special handgun called "The Preacher". Its barrel was designed to fire any type of ammunition, and the butt could auto adjust to accept magazines of any size. Frank pockets the gun after killing off everyone else.
- Nightwing villain Torque was given a assault rifle supplied by Intergang that had various voice-activated functions. It could do laser blasts, explosive blasts, an optics flare for blinding people and a kinetic pulse-type feature that could push something away. When Torque goes overboard and the gun starts overheating, it gets another function: as a bomb.
- In the Mass Effect/Command & Conquer: Tiberian Series crossover Renegade, the Global Defense Initiative has developed "Shapeshifter" weapons using mass effect technology, which consist of infantry rifles that feature various heavy weapon add-ons. This is following GDI's standard design logic when applied to the lighter, collapsible weapons that can be created using mass effect technology; after all, if they can make their guns smaller and fold out into full-sized weapons, then they can fit multiple weapons into the same space and weight that a conventional gunpowder weapon possesses.
- Zorg on The Fifth Element has developed one, and gives a very helpful Q Speech on its features, in this quote:
Voila, the ZF-1. It's light; handle's adjustable for easy carrying, good for righties and lefties; breaks down into four parts, undetectable by X-ray, ideal for quick discreet interventions. A word on firepower. Titanium recharger, 3000-round clip with bursts of 3 to 300, and with the Replay button (another Zorg invention) it's even easier. One shot... (shoots training dummy) ...and Replay sends every following shot to the same location. (demonstrates by spraying bullets at the Mangalore warriors; the bullets arc back to the training dummy) And to finish the job, all the Zorg oldies but goldies. Rocket launcher... arrow launcher (with exploding or poisonous gas heads), very practical... our famous net launcher... the always-efficient flamethrower, my favorite... and for the grand finale, the all-new 'Ice-cube System'.
- In Beverly Hills Cop III, Serge's "Survival Boutique" sells the Annihilator 2000, a combination minigun, microwave oven, rocket launcher, portable TV, flamethrower, beverage cooler...
- Judge Dredd: Dredd's Lawgiver:
Judge Dredd: Lawgiver 2, 25 round sidearm with mission variable, voice programed ammunition,... Signal Flare!Gun: Flare. vrrrrrJudge Dredd: (shoots a blinding flare at the target wall) Yours if you graduate.
- Similar to the above example, 2012's Dredd features the same Lawgiver, with its trademark voice-selectable ammunition.
- The titular "Soft Weapon" of the 1967 story by Larry Niven is also a Morph Weapon.
- The dial-a-gun or "dallygun" from Gordon R. Dickson's 1970 SF war novel Tactics of Mistake. It wasn't very practical for the harsh combat environment, as dirt could jam it and it required that lots of different ammunition and spare parts be available, but the protagonist used it once to great effect.
- The rifle used by CDF troops in John Scalzi's Old Man's War. It can shoot bullets, grenades, flames, microwaves, rockets... Even better, one can customize to fire, say, a blast of flame followed by a grenade. The "ammunition" is a block of nano-machines which assemble into the correct type of ammunition upon firing.
- The Memory Sword in The Dark Side of the Sun by Terry Pratchett can become a wide variety of weapons, from swords to molecular strippers to projectile guns that make ice bullets by freezing atmospheric moisture.
- Colonel Fedmahn Kassad's FORCE-issue rifle in the Hyperion Cantos includes flechette grenades, laser beams, and several other weapons in one package.
It was designed to do everything but cook the troops' food, and with its energy weapon component on its lowest setting, it could probably do that too.
- The Alloy of Law features Vindication, designed to fire specialised rounds that are optimised against various types of magic-user.
- In Logan's Run, the Sandman guns had six attack methods: homer (a heat-seeking projectile), tangler (sticky net), nitro, vapor (ignites every pain nerve in the body), ripper, and needler. In the movie there were no such settings.
Live Action TV
- Blake's 7 featured some of these for the last season when they started going more overtly Cyber Punk. Quite how one makes a relatively small handgun fire Frickin' Laser Beams, unspecified less-lethals, "old-fashioned percussion bullets" and a bunch of other stuff they never get around to using just by swapping magazines was glossed over.
- Saturday Night Live had a fake commercial for a Swiss Army Gun, complete with giant ivory toothpick and corkscrew.
- Level Up: Wyatt's Blast-A-Ton is gigantic swiss army gun with lots of ammo and many types of ammo.
- Even at the most limited definition (things that could be the same basic effect to different degrees counts as one mode, and modes that could be used as weapons but aren't are discounted), Star Trek's phasers have at least two attack modes: shoot at things to make them stunned/killed/disintegratednote , and blow up.
- Supplemental materials went into a bit more detail. The basic Type 2 hand phaser has sixteen power settings: Level 1 is basically a wireless taser, Level 3 will knock an adult human unconscious for about an hour, Level 7 is almost universally lethal and Level 8 is a Disintegrator Ray. The settings beyond that tend not to get used much, but Level 16 would probably put the frontal armour of a 21st century main battle tank to some trouble. They also have a seldom-used Spread Shot mode.
- In the Supernatural episode "All Hells Breaks Loose, Part Two" (S02, E22), the Colt, a gun which can kill most supernatural creatures, is also used as a key to unlock a crypt which is sealing a Hell Gate.
- Juukou B-Fighter (and it's American adaptation, Big Bad Beetleborgs) had the Input Magnum (in Beetleborgs, the Sonic Laser), a laser gun that, depending on the 3-digit code inputted on the bright blue keypad on one side, would fire different beams or effects. The sequel, B-Fighter Kabuto (or Beetleborgs Metallix) had the Input Card Gun (Data Laser in the US), where different Input Cards would be slid into the back for different effects.
- Battlestar Galactica. Pilots are equipped with standard sidearm with a large-calibre underbarrel attachment for explosive rounds that can make Centurions' heads explode. Presumably it also fires specialist loads like signal flares for downed pilots.
- This may be based off vierlings like the Space Gun, a combination sawed-off rifle/double-barreled shotgun designed as a compact foraging tool, since different game animals are easier to hunt with shot or bullets.
- Warhammer 40,000:
- You think the standard Space Marine is scary with his automatic-explosive-armor-piercing-round firing "Bolter", don't you? Say hello then to the Sternguard Veteran, whose guns can switch between multiple specialized bolter ammunition types depending on the situation, be they incendiary-fireball-explosive, scalding-gas-explosive, supersonic-velocity, extra-armor-piercing or scariest of all, poisonous-acid-filled bolts.
- And then the Deathwatch go one better, bringing bolts that disrupt the power of psionic entities (like Chaos Sorcerors) and bolts that create miniature gateways to hell to the table... amongst many others.
- The tabletop game has rules for combi-weapons, basically a weapon with a different weapon attached and can be used once per game.
- Any and all Ork shootas can be used as melee weapons, some by having choppy bits, others by virtue of being over fifty pounds of pig-iron held together with spit and WAAAAGGGGHHHHH!.
- Chaos Obliterators are former Mechanicus troops and priests who have been infected with a virus that literally turns their flesh into steel, and can create any weapon they want from their bodies.
- In Paranoia, cone rifles and some other guns take multiple types of ammo (armor-piercing, hallucinogenic gas, etc.) with the same size shells, which are never ever mislabeled.
- And some of those mislabeled cone shells definitely wouldn't have a chance of being tactical nuclear devices.
- BattleTech's Mauser 960 Assault System, the standard issue rifle of the Star League, was a laser rifle with an integrated grenade launcher, a vibro bayonet, and an enormous survival kit (flares, emergency nutrient pills, a radio, a spade, and a medical kit) built into the stock. Few exist in the modern age, most of which are in horrible shape save for a sizable stockpile of pristine ones in ComStar's vaults. Like the real life OICW, it was an enormously heavy design that rapidly fatigued its users; and the Clan retrofit is even heavier.
- You have to be superhumanly strong to use most of them, but Naruni: Wave 2 for Rifts contains a series of mercenary multi-rifles, which tend to combine three weapons in one, such as the Silverfire, which contains a gun which fires silver projectiles, a flamethrower, and a laser; and others that combine plasma cartridge, laser, plasma beam, grenade, micromissiles etc. together, usually in combinations of three. Some can even have a vibro-bayonet mounted, for extra cost.
- The Daisho-10 made by the Oni in the Three Galaxies setting is a nonomachine-based weapon that transforms between a Sub-machine gun and a Vibro-sword. The company that produces it also has a version reserved for its own use that has a fully-functional third form of a camera or hand-held computer.
- If you like the idea of using Zorg brand weapon clusters in your OGL science fiction games, there is a blatant copy in the OGL supplement 1001 Science Fiction Weapons. You will need to be proficient in both energy and slugthrower weapons to use the General Weapon System Mark 183, which contains a shotgun, particle beam, laser, micromissiles, and grenade launcher in one single handy pod. The more advanced Mark 490 contains an X-ray laser, stun ray, plasma gun, armour-piercing force bolt, and an antimatter gun.
- The Remco System 7 toy gun from the 1980s. Spinny-disk shooter, periscope, decoder, parachute launcher, ring key lock, secret compartment, and a lot of pure awesome.
- The Johnny Seven O.M.A. (One Man Army) gun from the 1960s. Grenade Launcher, Anti-tank rocket, and more.
- The Multi-Pistol 09 had multiple grenades and rockets, fired a couple of different types of plastic bullets, and even had a small derringer concealed in the grip.
- Samus's Arm Cannon from Metroid certainly qualifies. It has been, among other things, a rocket launcher, grappling hook, freeze beam, shotgun laser, heat ray, and a recharge plug. The list just keeps growing with more games.
- Mega Man (Classic)'s iconic Mega Buster changes into the weapon of any Robot Master he defeats. In any one game, the Buster can function as a rocket launcher, flamethrower, ice gun, grappling wire, boomerang thrower, needle gun, and time manipulation device...just to name a few.
- Iji's personal favorite nanoweapon, a Tasen Gen 2 Preloader, can form everything from a simple shotgun to a spray fire energy weapon to a giant laser to a repulsor to a nuke. Perhaps noteworthy in that the player must trick the Swiss Army Gun into being able to utilize many of the more unusual configurations.
- In Jak II: Renegade, the Morph Gun starts out as a shotgun, but gets mods that not only increase its normal stats, but also turn it into a single-shot rifle, a machinegun, and a BFG. The third game adds a Reflecting Laser, a Ground-wave generator, a Lightning Gun, an Anti-Gravity generator, a Grenade Launcher, a Drone Launcher, a Homing Needle Gun, and a Pocket Nuke.
- Vanquish has the BLADE-short for Battlefield Logic ADaptable Electronic-system, which scans weapons and uses the data to morph into said weapon. Of course, the hard drive only has enough data for three guns, which means to pick up a new weapon, the player must swap out the data of a currently-equipped gun.
- The SICW in Classified The Sentinel Crisis is a transforming machine gun/sniper rifle/shotgun/grenade launcher/gatling gun/rocket launcher. It's supposed to be man-portable, although the person carrying it is wearing powered armor.
- The canceled Tiberium FPS would have included a transforming weapon as part of its basic design. Wielded solely by the player, the "GD-10" served as a basic assault rifle, grenade launcher, missile launcher, and personal ion cannon.
- In City of Heroes, The eponymous weapon from the Assault Rifle powerset seems to do everything but dispense mixed drinks.
- Star Wars: Republic Commando cuts down the amount of equipment the characters have to carry by making the primary weapon modular, capable of swapping between automatic, sniper and grenade modes depending on which quick-change barrel assembly is currently attatched.
- Redline features such a weapon wielded by the protagonist. Besides the standard assault rifle mode, it can also become a buzzsaw (with optional nitro upgrade that makes you fly around for a limited time), a rocket launcher, an EMP device (handy for those vehicles!), a shotgun, a grenade launcher, an alien goo shooter, a sniper rifle, and a Hit Scan type plasma beam weapon.
- Accolade's earlier TPS/FPS Eradicator also outfitted all three characters with Swiss Army Guns. In both games, to use the extra gun modes, you just collect the required ammo scattered throughout the levels-no need to collect prerequisite guns first!
- Jazz Jackrabbit's long blue gun, the LFG-2000 Blaster, is designed to be compatible with most types of ammunition, conventional or otherwise. This includes plasma rounds, rubber bullets, freezing rounds, small homing missiles, large exploding rockets, flamethrower fuel, pepper spray, electric charges, even standard TNT.
- Hard Reset has not one but two Swiss Army Guns. One of them acts as a chaingun/gatling assault rifle, a Short-Range Shotgun, a Grenade Launcher, a rocket/missile launcher and a minelayer. The other shoots bolts of energy, a stream of energy, zappy electrical field grenade things, a high-power pinpoint-accurate sniper mode with shots that penetrate walls, and explosive energy bolts that 'phase' through cover to find your target. Oh, and each mode has a Secondary Fire too.
- In Perfect Dark, nearly every weapon in the game has a secondary function, some of which are quite unique. Eg. the Laptop Gun (SMG and automatic sentry), Dragon (assault rifle and proximity mine), K7 Avenger (assault rifle and threat detector), RCP-120 (SMG and cloaking device), etc.
- In Star Wars: The Old Republic the Republic Trooper class (no matter the Advanced Class choice) has this as a weapon. It can fire regular shots, an "explosive round", fire mortars, lay down a close AOE Ion Pulse, and can heal teammates.
- Parasite Eve featured a weapons customization feature that allowed you to take 'features' from other weapons and put them on whatever weapon you wanted. A New Game+ weapon might be a pistol capable of firing exploding bullets in three round bursts with shotgun-like spread. The sequel featured a more realistic version of this, the M4A1, which can accept any number of modifications ranging from rather benign attachments such as a bayonet or a magazine attachment to double the ammo count per-magazine, to the really fantastic stuff like an underbarrel armor-piercing laser or high-power paralyzing taser.
- The Playstation FPS Codename: Tenka (or "Lifeforce Tenka" overseas) featured the "Self-Generating Polymorphic Armoury" or SG-26, an assault-rifle-sized weapons system that could shoot standard lead, lasers, grenades, missiles and mines, some of them upgradeable with various sub-modes (like dual and chargeable laser beams, and automatic rifle fire).
- In Battle Zone 1998, the astronaut's automatic plasma rifle can be shouldered to use an integrated cockpit-penetrating sniper rifle. In the sequel, the Pulse Rifle used by ISDF has the same functionality, with the addition of a telescoping barrel and a more ergonomic digital scope that pops up from the rear of the receiver. The sequel also has a 'Bazooka' alternate weapon, which can fire (relatively) rapid-fired rockets, or a massive high explosive blast.
- The obscure Gunmen Chronicles is made of this trope. It has little more than 6 actual weapons, but each weapon has at least 4 submodes, that can even have their own sub-sobmodes: you can program a Rocket Launcher for firing homing or non homing missles, and sub-program said missles to be high explosive, grapeshot, or attach to the surface as laserwire high explosive/grapeshot mines.
- In Hard Reset, the player is only given two weapons from the start - the C.L.N. Firearm and the N.R.G. Weapon. However, these two weapons transform. The C.L.N. Firearm can shift into ballistic and explosive weaponry such as a standard machinegun, a shotgun, a grenade launcher, RPG launcher, and a mine thrower. Likewise, the N.R.G. weapon can shift into energy-based, and electric weaponry such as a plasma rifle. shock blaster, electric mortar, energy railgun, and a smartgun that fires homing projectiles. However, the entirety of the weapons do not transform, only the muzzles, or barrels do.
- In the Time Squad episode "Nutorious", Tuddrussel gets a laser gun with tons of features. The problem? He has no idea how to use the laser gun part of it.
- Exaggerated in the Adventure Time episode "Varmints", where Princess Bubblegum uses a strange shotgun with a knob that adjusts between many bizarre firing modes: Frickin' Laser Beams, projectiles that turn things into flashlight batteries, force fields, and creating a second gun of the same time that starts out fused at the barrel to the first one.
- The Israel Military Industries (IMI) Galil assault rifle has a folding stock and folding bipod, which are typical for modern military rifles. However, the folding bipod also can be used as a wire-cutter, and the "ribs" under the forearm that hold it up in the folded position are designed to be used as a bottle-opener. This latter function was because Israeli troops had the habit of using the feed lips of their rifle magazines to "pop the top" of soda bottles, which bent the feed lips and caused feed-jam malfunctions.
- Similarly, some military rifle bayonets (like the U.S. M9 bayonet for the M16A2 rifle) are designed to be used as wire cutters; a hole in the blade near the tip slips over a lug near the end of the bayonet's scabbard, and the end of the scabbard has a "notch" for the wire. The whole thing works like a pair of pliers.
- Various modern assault rifles, including the M16A4, the M4 carbine and the Beretta ARX-160, are designed to be field modifiable with a variety of attachments, using rails and hand-turnable screws to attach weapon mods to them, such as foregrips, grenade launchers, laser sights, flashlights, tasers, shotguns, red dot sights, and scopes... and that's just the stuff the military issues. There are third party mods for all sorts of things. Even better, the guns can be changed to fire a different cartridge with the push of a couple of pins and the replacement of the upper receiver and barrel, a trivial operation that can be completed in under a minute by an experienced user. If they could attach a Swiss army knife to the gun, they'd be set. (They can take bayonets, though. Almost there...)
- Although highly experimental/theoretical, both proposed liquid propellant and railgun designs could potentially vary the speed of their projectiles, by either changing the amount of propellant fed into the firing chamber, or the amount of charge used in its electromagnets, respectively. This could result in a gun that could effectively switch between being a submachinegun to being a sniper rifle with the flip of a switch- or switching from a low powered but quiet "stealth" mode to a high powered but noisy "magnum" mode.
- The XM8 is a weapon that could fill a number of roles (assault rifle, designated marksman rifle, light machine gun, grenade launcher, compact carbine), however, the US military, its original user deemed it too expensive and not enough of an improvement to justify a complete change, or even not as good as some guns dedicated to specific tasks (namely the light machinegun variant). The project was not a complete wash though, as the weapon and all its variants are now used by Malaysian special forces.
- A Grenade Launcher like the venerable M79 can fire tear gas, smoke grenades, illumination rounds and even buckshot in addition to fragmentation grenades. There is even a 40mm canister round being developed that fires a small wireless camera that slowly comes down on a parachute, linked to a helmet-mounted Head's Up Display or tablet device to allow a soldier to observe a large area without a drone.
- Shotguns have an equally impressive variety of specialist ammunition; less-lethal ammunition like beanbags or rubber buckshot, a round that works like a one-use miniature taser, distress flares... There's even the Dragon's Breath round, which basically turns your shotgun into a mini-flamethrower.note
- Similar to Grenade Launchers and Shotguns above, Revolvers are also sometimes put into this category because the "random access" of their cylinders can more easily accept situational specialized ammunition by loading individual rounds than a magazine or belt-fed automatic weapon would use.