Springfield Armory (US Government) · Sniper-Rifle · Out Of Production · 1969
| Weight (empty) | 5270 g (185.9 oz) |
| Overall Length | 1120 mm (44.09") |
| Barrel Length | 559 mm (22.01") |
| Magazine Capacity | 20 rounds |
| Action Type | Gas Operated Short Stroke |
| Firing Mechanism | Rotating Bolt |
| Muzzle Velocity | 853 m/s (2799 fps) |
| Muzzle Energy | 3457 J (2550 ft·lbf) |
| Effective Range | 690 m (755 yd) |
| Frame Material | Steel |
Primary Caliber: 7.62x51mm NATO
The M21 Sniper Weapon System was the United States Army's primary sniper rifle from 1969 until its replacement by the M24 SWS in 1988. Based on the M14 battle rifle, the M21 was a semi-automatic sniper weapon built from hand-selected M14 receivers and National Match-grade components, paired with the Adjustable Ranging Telescope (ART) scope. The semi-automatic action gave snipers a decisive advantage in rapid follow-up shots compared to bolt-action rifles, a capability particularly valued in the ...
Country of Origin: United States