M7 rifle
| M7 | |
|---|---|
M7 U.S. Army 6.8mm rifle with the M157 fire control optic | |
| Type | Assault rifle |
| Place of origin | United States |
| Service history | |
| In service | 2022–present |
| Used by | United States Army |
| Production history | |
| Designed | 2019 |
| Manufacturer | SIG Sauer |
| Specifications | |
| Mass | 8.38 lb (3.80 kg) 9.84 lb (4.46 kg) (with suppressor) 7.6 lb (3.4 kg) (M7 PIE) 7.3 lb (3.3 kg) (10.5 in barrel, with suppressor) |
| Length | 36 in (914 mm) (with suppressor) 33.5 in (851 mm) (10.5 in barrel with suppressor) |
| Barrel length | 13 in (330 mm) 10.5 in (267 mm) |
| Cartridge | 6.8×51mm Common Cartridge (.277 Fury) |
| Action | Short-stroke gas-operated piston, rotating bolt |
| Muzzle velocity | 915 m/s (3,002 ft/s) 854 m/s (2,802 ft/s) (10.5 in barrel) |
| Feed system | 20-, 25-round (optional) detachable box SR-25 pattern magazine |
The M7 rifle, previously designated as XM7 and originally as XM5, is the U.S. Army's adopted variant of the SIG MCX-SPEAR chambered in 6.8×51mm Common Cartridge (.277 Fury), designed by SIG Sauer for the Next Generation Squad Weapon (NGSW) program in 2022 to replace the M4 carbine.
The M7 features a gas-operated system, a free-floating reinforced M-LOK handguard for direct accessory attachment to slotted hole mounting points, and uses a SR-25 pattern magazine. It was fielded beginning in March 2024.