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Ammunition Backpack

A Sub-Trope of Awesome Backpack, the Ammunition Backpack is there if you use More Dakka, but don't have Bottomless Magazines, or just don't have enough space to carry more ammo in your pockets or Badass Bandolier. Depending on the size of the backpack, the wearer may become a Mighty Glacier due to the weight slowing movement.

Common for characters using hand-held miniguns (such as Blaine in Predator and the T-800 in Terminator 2: Judgment Day) or other portable machine guns. Also included are fuel tanks for flamethrowers, portable power plants for Energy Weapons, and the like, and quivers for the Archer Archetype. In Video Games, you can bet that damaging the tanks will defeat enemies For Massive Damage.

See also Backpack Cannon.

Examples:

    open/close all folders 

    Anime and Manga 
  • Taken Up to Eleven in Hellsing Ultimate; For the final battle, Victoria's anti-tank rifle gets upgraded to a fully automatic belt-fed version and she uses a pair of them (with the appropriate reserve of ammo, many times her weight) to go Guns Akimbo against the vampire Nazi zeppelin
  • Downplayed by the Panzer Cops in Jin-Roh: The Wolf Brigade. Their backpack stores ammo for their MG42s, but instead of it being a rack for a continuous belt going directly into the gun, it lets the user pull out individual belts to be loaded into the gun, sort of like a paper towel dispenser. For bullets.
  • The Hajime Katoki redesign of the Gundam Heavyarms features a huge ammo drum the size of the mech's torso.

    Comic Books 

    Film 
  • Predator franchise:
    • Blaine's Mini-Gun backpack magazine in the first Predator. Yes, it may just be an oversized magazine, but considering it's Blaine, Predator, and the whole awesomeness in general of that movie, well, it becomes awesome by proxy.
    • Predator 2: Peter Keys' team had "nitrogen guns" (liquid nitrogen backpacks attached to sprayers), which they planned to use to freeze (and thereby capture) the Predator.
  • Terminator 2: Judgment Day: for the minigun the T-800 uses against the police.
  • Lara Croft: Tomb Raider: the title character could reload her pistols using a mechanism in her backpack.
  • The proton packs from Ghostbusters may count, as that's where all the particle accelerating goes down.
    • The packs from Extreme Ghostbusters definitely count, since the "wands" are proper guns fed by nuclear batteries stored in the backpack.
    • The Slime-Blowers from the second film definitely count.
  • The Matrix Revolutions had a variation on this with the humans' mecha, which would load ammunition ("knuckle-up") by lifting the guns behind them and magnetically attaching the chains. The ammo was loaded in a manner similar to an ammunition backpack.
  • Hawkeye's quiver in The Avengers actually has the shafts separate from the various arrowheads, with a rotating carousel that gives him exactly the head needed.

    Literature 
  • Robert A. Heinlein's novel Tunnel in the Sky. Johann Braun had a powerful weapon called the General Electric Thunderbolt. He wore its power pack as a backpack. The large metal backpack serves the colony well long after it stops functioning as a power supply for a broken weapon.

    Live Action TV 
  • Red Dwarf had them for the bazookoids in the episode Polymorph. Also, one of the novels had them as the weapon's power source before it was retconned out.
  • In the 1960's Batman TV series, Mr. Freeze wore a tank of freezing gas on his back to fuel his Freeze Ray.

    Tabletop Games 
  • Several weapons from Warhammer 40,000 are linked to a backpack, such as Imperial Guard hellguns, Ork deffgunz, and various Space Marine weapons (heavy bolters, meltaguns). Space Marine missile launchers are not linked to the backpack, but in some cases it contains a reloading mechanism.
  • Traveller
    • The PGMP/FGMP (Plasma/Fusion Gun, Man Portable) and laser carbine/rifle had backpack power packs.
    • The Dragon magazine #116 article "Aim and Burn" has several flamethrowers, each with their fuel supply in backpack tanks.
  • Paranoia
    • Flamethrowers and plasma generators. On the down side, a malfunction means they're about to explode, and the wielder must spend time unstrapping themselves before trying to outrun the blast radius. Hand flamers avoid it, but hold less fuel (and are only legal at Violet clearance).
    • The adventure "Send in the Clones" had an Ice Gun with its water supply in a large backpack instead of inside the gun as usual.
  • Champions supplements
    • Gadgets!
      • The Plasma Gun, which was connected to a large backpack that contained its power source.
      • The Ice Sprayer had a supply of compressed liquid gas in a backpack Dewar container.
      • The Electric Gun had a large, heavy backpack generator/capacitor.
      • The Flamer was a flamethrower with fuel carried in multiple use tanks worn on the back.
      • The Force Field Neutralizer carried its power supply in a backpack.
      • The Sonic Disruptor had a back-slung power source.
    • Enemies. The supervillain Blowtorch had a flamethrower with its fuel in a backpack.
  • Some heavy and directed-energy weapons in Shadowrun, like flamethrowers and laser cannons, require lots of fuel. If the weapon isn't vehicle-mounted, then the wielder is likely carrying all that fuel on his back.
  • Iron Crown Enterprises (I.C.E.)
    • The Cyberspace RPG had a number of ranged weapons with backpack power sources: the Gauss Rifle, Laser Rifle, Assault Laser and Heavy Laser.
    • Role Master, Spacemaster Privateer campaign setting. Backpack energy cells can hold 35,000 energy units and are often used to power large weapons.
  • BTRC's Guns! Guns! Guns! generic supplement (1996). Battery packs for man-portable laser and particle beam weapons could be carried in a backpack, connected to the weapon with a short power cable.
  • Star Frontiers. The Alpha Dawn expanded game rules had the Power Backpack, which could supply energy to fire weapons such as laser pistols/rifles, electrostunners and sonic disruptors.
  • Battlelords of the 23rd Century
    • The LTX-311 Chain Gun carries its ammo in a backpack.
    • Disintegrators use backpack mounted power supplies.
  • The Hot Chicks RPG had an Ammo Backpack available for all belt-fed firearms. It held 20 times the weapon's normal ammo capacity.
  • Laserburn Sci-Fi Combat Rules (1980): the Sungun carries its chemical fuel in a backpack which holds enough for six shots.
  • Manhunter. the Particle Accelerator Rifle was attached to a heavy backpack which stored the small metal pellets which were the P.A.R.'s ammunition and the energy that propelled them.
  • Mutant Future: most ranged energy weapons could have a Power Backpack as their energy source. It weighed four pounds and had a power cord that plugged into a weapon.
  • Terran Trade Authority RPG: the Power Backpack can be used as a power source for all portable energy weapons. It doesn't just store energy, it actually generates it, so it provides effectively infinite shots.
  • GURPS Technomancer:
    • The Portable Mana Disruptor had a backpack ERTG power pack and the Manpack Necrolaser was connected to a 20 lb. backpack battery pack by a heavy cable.
    • Flamethrowers have a backpack fuel tank.
  • R. Talsorian Games' Cyberpunk 2020. The Pacific Rim Sourcebook had the MicroMortar, a grenade launcher with its magazine of grenades stored in a backpack.
  • In Nomine: Belial, the Demon Prince of Fire, often appears wearing a flame thrower with a fuel tank backpack.
  • Gamma World: in 1st Edition, the fusion rifle was connected to a backpack that contained the atomic energy cell that powered it.
  • Men In Black Tabletop Game: the Plasma Rifle has a backpack power pack.
  • Phoenix Command: Battlepacks for Power Armor infantry serve as an ammunition rack and reload system for the armor's weapon, such as 30mm grenade launchers.
  • Fantasy Games Unlimited's Aftermath! Book 3
    • The U.S. Army XLMR-4 is a laser rifle that draws power from a backpack-type harness holding a powerful battery.
    • Flamethrowers carry their napalm fuel in tanks held in a backpack harness.

    Toys 
  • The Super Soaker CPS3000 and CPS3200 both feature backpack water reservoirs with significantly higher capacity than any other water gun out there.

    Video Games 
  • The Ammunition Backpack in Tribes, which doubles your ammo capacity. It's rarely used, however, since you end up sacrificing the ability to repair yourself, shield yourself, cloak yourself, or create a radar jammer.
    • The Energy Pack in Tribes 1 and 2 simply increased the recharge rate of your energy bar, effectively increasing your energy weapon refire rate, but saw more use than the Ammo Pack due to the fact that it also allowed more jetpacking and also being required to equip the Laser Rifle.
  • Doom: The Backpack allowed you to carry double the ammo. This was very useful for the weapons with high fire rates such as the chaingun and plasma rifle.
  • The minigun in Resident Evil 5 comes with a HUGE backpack-o-ammo, whether it's being used by an enemy or Chris. It's actually somewhat problematic when you use it, since the huge backpack blocks off so much of your vision that large parts of the screen becomes obstructed while in aim-mode. But it does have the huge plus of both giving the chain gun it's ammo and it will also block attacks from the back, making it hard to get grappled or struck from behind.
  • Metal Gear Solid: Vulcan Raven wears a massive ammo tank for his M61 Vulcan on his back.
  • Certain enemies in Borderlands have ammo tanks which can be blown up (which is good, since these enemies tend to be the insanely powerful ones).
  • Team Fortress 2: The Medic has a backpack for his Medigun. Subverted slightly with Pyro; that thing on the Pyro's back is an oxygen tank, the ammunition is supplied by a propane canister on the flamethrowers itself (though the class selection screen still shows the backpack connected to the weapon). The Scout seems to keep all his weapons in his messenger bag, and the Soldier has a small backpack filled with rockets. The Sniper, when using the Huntsman, carries a quiver of arrows.
  • Robotic example from Too Human - some of the 'Troll' class enemies use heavy Grenade Launchers, and wear huge, cylindrical ammo-canisters on their back to supply them. These are somewhat problematic, since their presence prevents you from doing your 'jump up on their shoulders and stab them in the neck' insta-kill, and they're hard to destroy since the Trolls always turn to face you ... hence, the grenade-launching Trolls winds up being much more dangerous than their hammer-wielding brothers, but not because of their attack-range...
  • Fallout 3 and Fallout: New Vegas features an ammo backpack for many Big Guns, like the minigun or flamethrower, as well as a motorcycle gas tank for a Flaming Sword melee weapon. The Minigun has the ammo pack as well as motor, while the Gatling Laser has a huge battery pack. The Flamer has fuel tank, though strangely absent for the Incinerator.
  • Flamer units in Mass Effect 2 come with fuel tanks on their backs. Incredibly dangerous at close range as it almost instantly breaks your shields and can stunlock you to death. The best tactic to use against them is to snipe the fuel tank from long range, which causes them to flail around before exploding in a shower of gibs.
    • Incredibly dangerous, that is, unless you have the Incinerate or Overload tech powers. In that case, flamers are more of a threat to their allies than to their enemies.
  • Portal 2 showed one of the earliest models of the portal gun, it had a huge backpack used as energy storage.
  • Jorge in Halo: Reach has one for his minigun. It doesn't slow him down one bit.
  • A few of the heavy weapons in the Ballistic Weapons mod for Unreal Tournament 2004 are attached to backpacks of some sort. Flamethrowers and the like can have their backpacks damaged, causing the unlucky user to shoot into the air before exploding.
  • Call of Duty: World at War adds flamethrowers to the game. This being World at War, shooting enemies that are carrying flamethrowers, even if you don't hit the tank, often causes them to explode.

    Web Comics 
  • S.S.D.D: "Black Rose" Plasma Cannons are powered by a miniature fusion generator carried on the back. In fact they're one of the big weaknesses with the design, the connecting hose is fragile and if ruptured hot plasma spews out, and unlike larger reactors if magnetic containment is breached the plasma touches the casing for a split second before dissipating and superheats it, causing an explosion.

    Western Animation 
  • Seeing as how the content of Dora's backpack changes to fit the need each episode, one imagines that this trope could take effect if Dora ever found herself running afoul of a drug cartel.

    Real Life 
  • Some flamethrowers require tanks to hold fuel. They are very visible and draw fire from enemy forces, and the fuel inside can be ignited easily if it leaks out (the wielder certainly wouldn't want either of those things) note  which is one of the reasons flamethrowers have fallen out of favour in combat.
    • The Russians developed a flame thrower with a fuel tank that resembled a standard ammo pouch, and built the nozzle to resemble a normal rifle. Flame weapons have since been outlawed by the Geneva Convention.
      • However though people still use them anyway often claiming Mundane Utility. The most infamous case is how the US still uses phosphorus bombs for signaling, signals which conveniently also burn and poison the target. In terms of flamethrowers, they still use them to clear brush and Forrest lands, sometimes containing the enemy.
  • The US Navy SEALs and MACVSOG had this during The Vietnam War. In Panama, the Delta Force used this. And in 2010, this backpack was unveiled.
  • If you don't have the fancy stuff, you can easily macgyver one by emptying your backpack and duct-taping an ammo box or two to it. If you have a backpack with a frame, remove the sack entirely.
  • Arguably, quivers for archers count, when not worn at the belt instead.

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