SIG Sauer · Submachine-Gun · In Production · 2013
| Weight (empty) | 2721 g (96.0 oz) |
| Overall Length | 660 mm (25.98") |
| Barrel Length | 203 mm (7.99") |
| Height | 241 mm (9.49") |
| Width | 64 mm (2.52") |
| Magazine Capacity | 30 rounds |
| Action Type | Gas Operated Short Stroke |
| Firing Mechanism | Hammer Fired |
| Muzzle Velocity | 396 m/s (1299 fps) |
| Muzzle Energy | 584 J (431 ft·lbf) |
| Effective Range | 100 m (109 yd) |
| Frame Material | Aluminum |
Primary Caliber: 9x19mm Parabellum
The SIG Sauer MPX is a gas-operated submachine gun chambered primarily in 9x19mm Parabellum, introduced in 2013 and manufactured in Newington, New Hampshire. Unlike the overwhelming majority of pistol-caliber submachine guns, which rely on simple blowback operation, the MPX uses a short-stroke gas piston system derived from the AR-15/AR-18 lineage, firing from a closed, rotating bolt. This architecture dramatically reduces the reciprocating mass during firing and, combined with the AR-style buff...
Country of Origin: United States
Designer: Kevin Brittingham and SIG Sauer engineering team