The SR-25 uses a rotating bolt and a direct impingement gas system. It is loosely based on Stoner's AR-10, rebuilt in its original 7.62×51mm NATO caliber. Up to 60% of parts of the SR-25 are interchangeable with the AR-15 and M16—everything but the upper and lower receivers, the hammer, the barrel assembly and the bolt carrier group. SR-25 barrels were originally manufactured by Remington Arms with its 5R (5 grooves, rounded) rifling, with twist 1:11.25 (1 complete turn in 11.25 inches or 286 millimeters). The heavy 20 in (510 mm) barrel is free-floating, so handguards are attached to the front of the receiver and do not touch the barrel.
First military purchase was spearheaded by the US Navy in the early 1990s; the first operational deployment and use of the SR-25 sniper rifle was with US Navy SEAL snipers supporting operations in Somalia 1993.
|Weight||Match Rifle 10.75 lb (4.88 kg),
LwMatch 9.5 lb (4.3 kg),
Carbine 7.5 lb (3.4 kg),
Sporter 8.75 lb (3.97 kg)
|Length||1,118 mm (44.0 in)|
|Barrel length||Match Rifle 24 in (610 mm)
(also LwMatch & Sporter 20 in or 510 mm, Carbine 16 in or 410 mm)
|Action||Gas-operated, rotating bolt|
|Rate of fire||Semi-automatic|
|Feed system||10 and 20-round detachable box magazine|
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