Piston-operated AR-10 pattern rifle in .308 Win with 16-inch barrel and quad-rail handguard. DPMS-compatible magazines. Type: Rifle Action: Semi-Automatic Caliber: .308 Winchester / 7.62x51mm NATO Capacity: 20 Year introduced: 2013, USA Weight: 192 oz Overall length: 36.5" Status: Active Intended use: Hunting, Sport Shooting