the M26s. War in Afghanistan In May 2008, the Army announced it would procure 35,000 units. The first M26-MASS shotguns were procured and fielded to military police and engineer units in 2010. However, some units in both Iraq and Afghanistan were issued the M26-MASS in small quantities as early as 2003. Full initial fielding began in 2011. Specifications Caliber: 12 gauge Operation: Manual Straight pull bolt-action. Capacity: 3 or 5 round detachable magazine. Ammunition: 2.75 (70mm) and 3 in (76mm) lethal, non-lethal and breaching rounds. Barrel length: 7.75 in (197 mm) with integral breaching stand-off adapter. Under-barrel configuration: Overall length: 16.5 in (419 mm) Weight: 2 lb 11 oz (1.22 kg) Stand-alone configuration: Overall length: 24 in (610 mm) (stock collapsed) Weight: 4 lb 3 oz (1.90 kg) See also Combat shotgun KAC Masterkey List of individual weapons of the U.S. Armed Forces (Shotguns) M203 grenade launcher M320 Grenade Launcher Module MAUL (shotgun) Saiga-12 References External links C-More Competition website M26-MASS 12 Gauge Modular Accessory Shotgun System (MASS) Fact sheet Security Arms Modern Firearms Global Security patent Bolt-action shotguns Shotguns of the United States