DPMS pattern AR-10 in .308 Winchester with an 18-inch 4150 CMV barrel and ATLAS R-ONE handguard. Aero M5 receivers have become the dominant AR-10 pattern platform, analogous to Aero M4E1 dominance in the AR-15 market. Type: Rifle Action: Semi-Automatic Caliber: .308 Winchester Capacity: 20 Year introduced: 2015, USA Weight: 8.5 oz Overall length: 39.5" Status: Active Intended use: Range / Hunting / Precision