The USSOCOM Advanced Sniper Rifle (ASR) and U.S. Army Precision Sniper Rifle (PSR) contract winner.The MK 22 defines a new class of long-range rifles by providing even greater capability within the MRAD rifle platform. With unfailing precision and Sub-MOA performance this bolt action sniper rifle adapts to a variety of user needs by converting between 7.62 x 51mm 300 NM and 338 NM calibers. The aluminum chassis features a folding stock with adjustable length of pull and cheek piece M-LOKA(R) attachment system 10 mil rail and suppressor capable muzzle brake. Features: Caliber: 7.62 x 51 NATO Operation: Bolt Action Repeater Barrel Length: 20" (508 mm) Twist Rate: 1 : 8" (200 mm) Overall Length: 42.4" (1077 mm) Weight: 13.9 lbs (6.3 kg) Mag. Capacity: 10 Rail Length/MOA: 21.75" (553 mm) 10 MIL