| M26-MASS (Modular Accessory Shotgun System) | |
|---|---|
 The M26-MASS configured under the M4 carbine. | |
| Type | Underbarrel Shotgun |
| Place of origin | United States |
| Service history | |
| In service | 2003–2011 (limited service) 2011–present (full service)[1] |
| Used by | United States |
| Wars | Iraq War |
| Production history | |
| Designer | Ira M. Kay |
| Designed | 1997–2002 |
| Manufacturer | C-More Competition |
| Produced | 2003–present |
| No. built | 9,000+ |
| Variants | XM26 |
| Specifications | |
| Mass | 3 lb (1.36 kg) underbarrel 5 lb (2.26 kg) with collapsible stock 3.5 lb (1.58 kg) with stock removed |
| Length | 16.5 in (419 mm) underbarrel 26.5 in (673 mm) stock extended / 24 in (610 mm) stock collapsed 18 in (457 mm) stock removed |
| Barrel length | 7.75 in (197 mm) |
| Caliber | 12 gauge |
| Action | Manually cycled straight-pull bolt action |
| Feed system | 3 or 5-round detachable box magazine |
| Sights | Underbarrel configuration: Zeroed for host rifle M16/M4 sights Stand alone configuration: Flip up non-adjustable iron sights or MIL-STD-1913 rail attached optic |
The M26-MASS (Modular Accessory Shotgun System) is a shotgun configured as an underbarrel ancillary weapon attachment mounted onto the handguard of a service rifle, usually the M16/M4 family of United States military, essentially making the host weapon a combination gun. It can also be operated as a stand-alone shotgun by attachment to a pistol grip/collapsible buttstock module. Rollout commenced in 2013, replacing the M500 shotguns in service.[2]
- ^ M26 MASS. Weaponsystems.net. (n.d.). https://weaponsystems.net/system/716-M26+MASS
- ^ Parsons, Dan (1 January 2013). "Army, Marine Corps Succeed in Rapidly Fielding Specialized Individual Weapons (UPDATED)". National Defense. Retrieved 11 March 2018.