SR-25
| SR-25 | |
|---|---|
An SR-25 outfitted with a riflescope, bipod and a detachable suppressor | |
| Type | Designated marksman rifle Semi-automatic sniper rifle |
| Place of origin | United States |
| Service history | |
| In service | 1990–present |
| Used by | See Users |
| Wars | |
| Production history | |
| Designer | Eugene Stoner |
| Manufacturer | Knight's Armament Company |
| Variants |
|
| Specifications | |
| Mass | 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) |
| Cartridge | 7.62×51mm NATO |
| Action | Gas-operated, closed rotating bolt, Stoner bolt and carrier piston |
| Rate of fire | Semi-automatic |
| Feed system | 10- and 20-round detachable SR-25 pattern box magazine |
The SR-25 (Stoner Rifle-25) is a designated marksman rifle and semi-automatic sniper rifle designed by Eugene Stoner and manufactured by Knight's Armament Company.
The SR-25 uses a rotating bolt and a Stoner bolt and carrier piston 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 (five grooves, right twist) rifling, with twist 1:11.25. The heavy 24-inch (610 mm) barrel is free-floating, so handguards are attached to the front of the receiver and do not touch the barrel.