Rock River Arms' .308 Winchester AR-10 pattern rifle, built on their proprietary LAR-8 lower receiver. Features a forged 7075-T6 aluminum receiver set, chrome-lined barrel, and National Match two-stage trigger. Type: Rifle Action: Semi-Auto Caliber: .308 Winchester Capacity: 20 Year introduced: 2007, USA Weight: 121.6 oz Overall length: 42" Status: Active Intended use: Competition, Hunting, Precision Shooting