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We're Getting Mutants in the MCU - The Loop
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Overview
The Atchisson Assault Shotgun is an American prototype shotgun developed by Maxwell Atchisson. It was further developed into the AA-12 by Military Police Systems.
The prototype was constructed from a variety of other firearms including parts from a M1918 BAR and furniture from an M16A1.
The rights of the weapon were sold to Jerry Baber of Military Police Systems in 1987, who developed the firearm further and overhauled it into the AA-12 which was demonstrated to the U.S. Military in 2004.
| Maxwell Atchisson Products | ||
|---|---|---|
| Firearms | 
| |
| Rifles | CRACK • Packer | |
| Shotguns | Assault Shotgun | |
| Submachine Guns | .22 Submachine Gun • Model 57 | |
 United States of AmericaWeapons Cold War Period (1946 — 1990) |
|---|
| Infantry Weapons | ||
|---|---|---|
| Melee Weapons | Knives | Ka-Bar • M7 • M9 • M11 • OKC-3S |
| Sidearms | Pistols | Gyrojet • M9 (A1 • A2 • A3 • A4) • MK 22 MOD 0 • XM11 |
| Machine Pistols | M10 • M11 • MP9 | |
| Close Quarters | Personal Defense Weapons | IO MP2 |
| Submachine Guns | Colt RO635 | |
| Shotguns (automatic) | Atchisson Assault Shotgun | |
| Shotguns (semi-automatic) | [[]] | |
| Shotguns (manual-action) | M500 • M590 • M870 | |
| Primary Weapons | Assault Rifles | Colt 601 • Colt 602 • M16 (A1 • A2 • A3 • A4) • M17S • Stoner 63 (A) • XM22 (E1) |
| Assault Carbines | XM177 (E1 • E2) | |
| Battle Rifles | AR-10 (A • A2 • A2C • A4 • A4C • B) • M14 (E1 • E2) | |
| Battle Carbines | [[]] | |
| Civilian Rifles | SIG AMT | |
| Automatic Support Weapons | Light Machine Guns | M15 • Stoner 86 |
| General Purpose Machine Guns | [[]] | |
| Heavy Machine Guns | [[]] | |
| Long Range | Anti-Materiel Rifles | [[]] |
| Bolt-Action Rifles | M24 (A1 • A2 • A3 • E1) • M40 (A1 • A3 • A5 • A6 • A7) • Remington 700 | |
| Designated Marksman Rifles | M21 SWS | |
| Launchers | Grenade Launchers (Attachment) | 40mm M203 (A1 • A2) |
| Grenade Launchers (Standalone) | 40mm China Lake • 40mm EX 41 • 40mm M32 • 40mm M79 • 40mm T148E1 | |
| Disposable Rocket Launcher | 83.5mm M141 • 84mm M136 • 139.7mm FGM-172 | |
| Rocket Launchers | 66mm M72 (A1 • A2 • A3) • 66mm M202 (A1) • 84mm M3 MAAWS | |
| Underwater Weapons | Assault Rifles | [[]] |
| Explosives | Anti-Personnel Mines | M18 (A1) • MM-1 |
| Anti-Tank Mines | M15 • M19 • M21 | |
| Offensive Grenades | AN/M14 Thermite • M7A3 CS Gas • M25A2 Riot Control • M47 Riot Control • M67 Frag • M84 Stun | |
| Smoke Grenades | AN/M8 • AN/M18 • AN/M83 White Smoke Grenade | |
| Firearm Accessories | ||
|---|---|---|
| Weapon Sights | Collimator | Crossfire • Razor • RX30 • Razor AMG UH-1 • SPARC AR • SPARC II • Spitfire 3x • Spitfire AR • Strikefire II • Venom • Viper |
| Holographic | EOTech 553 | |
| Iron | [[]] | |
| Night | [[]] | |
| Reflector | [[]] | |
| Telescopic | [[]] | |
| Attachments | Flashlights & Lasers | [[]] |
| Foregrips & Bipods | [[]] | |
| Infantry Equipment | ||
|---|---|---|
| Camouflage | Camouflage | ERDL • OD • MARPAT • UCP • Woodland |
| Clothing | Backpacks | [[]] |
| Body Armour | [[]] | |
| Bomb Suit | [[]] | |
| Elbow and knee pads | [[]] | |
| Signals & IFF | [[]] | |
| Suits | [[]] | |
| Vests & Webbing | [[]] | |
| Headwear | Communication | [[]] |
| Gas Masks & Rebreathers | [[]] | |
| Goggles | [[]] | |
| Helmets | [[]] | |
| Vehicle Headwear | [[]] | |
| Optics, Detection and Surveillance | Man-Portable Radar | [[]] |
| Mine Detectors | [[]] | |
| Night Vision Goggles | [[]] | |
| Periscopes | [[]] | |
| Rangefinders | [[]] | |
| Surveillance | [[]] | |
| Artillery | |
|---|---|
| Anti-Aircraft Guns | [[]] |
| Anti-Tank Guns | [[]] |
| Field Guns | [[]] |
| Howitzers | [[]] |
| Infantry & Mountain Guns | [[]] |
| Mortars | 81mm M252 • 107mm M30 • 120mm M121 |
| Railroad Artillery | [[]] |
| Recoilless Guns | [[]] |
| Rocket Artillery | [[]] |
| Siege Artillery | [[]] |
| Land Vehicle Weapons | ||
|---|---|---|
| Machine Guns | 5.56mm | M231 FPW |
| 7.62mm | FN MAG • GAU-19 • M37 • M60 • M73 • M219 • M240 • M1919A4 | |
| 12.7mm | GAU-19 (A • B) • M2 • T175 (E1) • XM238 | |
| Tank Guns | 76.2mm | M32 • T91 (E1 • E2 • E3) • T185 (E1) |
| 90mm | M3 • M41 • M54 • T7 • T15E2 • T54 • T76 • T125 • T208 (E9 • E13) • T209 | |
| 105mm | M68 (A1 • E1) • QF20 Pdr • T5E1 • T5E2 • T140 (E3 • E4) • T147 • T254 (E2) • X15E8 • XM35 | |
| 120mm | M58 • M256 • T53 • T122 • T123E1 • T123E6 • T179 • Rheinmetall • X23 | |
| 152mm | M81 (E1) • XM81 (E6) • XM150 (E5 • E6) | |
| 155mm | T7 (E1) • T180 | |
| 165mm | M57 • T156 | |
| 175mm | M113 • T256E3 | |
| 203.2mm | M1 | |
| Howitzers | 105mm | M2 (A2) • M4 • M49 • T96E1 • M103 • XM104 • XM103 |
| 155mm | M45 • M126 (A1) • M185 • T186E1 • M284 | |
| 203.2mm | M1 • M2 (A1 • A2) • M201A1 | |
| 240mm | 240mm M1 | |
| Autocannons | 20mm | M168 • Rh 202 |
| 25mm | M242 • Oerlikon KBA | |
| 30mm | Bushmaster III | |
| 40mm | M2 (A1) | |
| 75mm | 75mm XM274 | |
| Recoilless Guns | 106mm | M40 (A1) |
| Misc. | Spotting Rifles | M8 |
| Aircraft Weapons & Munitions | |
|---|---|
| 12.7mm Aircraft Machine Guns | Browning M2 (AN/M2 • AN/M3) • GAU-19 |
| Aircraft Cannons below & including 30mm | 20mm AN/M2 • 20mm AN/M3 • 20mm M24 • 20mm FMC T-160 |
| Aircraft Cannons above 30mm | [[]] |
