Semi-automatic .308 Winchester battle rifle based on the original AR-10 design that preceded the AR-15. 16-inch chrome-lined barrel, forged receivers. Armalite AR-10 magazines are proprietary and not cross-compatible with DPMS-pattern rifles. Type: Rifle Action: Semi-Automatic Caliber: .308 Winchester Capacity: 20 Year introduced: 2005, USA Weight: 9.6 oz Overall length: 38.5" Status: Active Intended use: Range / Precision / Hunting