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The Winchester SX-AR Semiautomatic Centerfire Rifle is gas operated and is able to offer reliability and ultimate accuracy in any given environment. Offered with a Mossy Oak Brush camo finish, it has a heavy-contour, match-grade, chrome plated, and hammer-forged 20" barrel with a recessed target crown. It sports a military-standard 1913 bottom rail with an integrated swivel stud for a bipod or sling on the forend. This semiautomatic rifle is compatible with FNAR 20-round magazines and comes included with two-piece scope bases. The low-friction magazine follower guarantees a smooth feeding and the magazine release is ambidextrous.