Military Police Systems, Inc. · Shotgun · Limited Production · 2005
| Weight (empty) | 4760 g (167.9 oz) |
| Overall Length | 991 mm (39.02") |
| Barrel Length | 457 mm (17.99") |
| Magazine Capacity | 8 rounds |
| Action Type | Gas Operated Open Bolt |
| Firing Mechanism | Striker Fired |
| Muzzle Velocity | 320 m/s (1050 fps) |
| Effective Range | 50 m (55 yd) |
| Frame Material | Stainless Steel |
Primary Caliber: 12 Gauge
The Atchisson AA-12 (Auto Assault-12) is a fully automatic combat shotgun that represents one of the most technologically advanced shotgun designs ever produced. Originally conceived by Maxwell Atchisson in 1972, the weapon underwent a comprehensive 19-year redesign by Military Police Systems, Inc. (MPS) under German-born machinist Boje Cornils, incorporating 188 improvements before entering limited production in 2005. The AA-12 fires from an open bolt and utilizes a proprietary constant-recoil ...
Country of Origin: United States
Designer: Maxwell Atchisson (original 1972), Boje Cornils (2005 redesign)