Barrel: 20" Length 4140 Chrome-moly steel, heavy barrel 6 grooves, right-hand 1x10 twist,button rifled 308 Panther Flash Hider Chamber: 7.62 NATO Method of Operation: Gas operated rotating bolt Bolt & Carrier: 8620 steel bolt carrier, heat treatedand plated per Mil Spec Phosphated steel bolt, heat treatedand plated per Mil Spec Sights: Standard A2 front sight assembly Weight: Empty – 11.15 lbs. Length: 41 1/4" Upper Receiver: A3-Style Flattop w/ 308 detachable carrying handle, thick walled, extruded from 6066-T6 aluminum Hard coat anodized per Mil Spec and Teflon® coated black Dust cover Shell deflector Forward assist Right hand ejection Lower Receiver: Milled from a solid billet of 6061-T6 aluminum Hard coat anodized per Mil Spec and Teflon® coated black Integral trigger guard Aluminum magazine release button Standard AR-15 trigger group Stock: Standard A2 Black Zytel Mil Spec w/trap door assembly Handguards: Standard length A-2 Style Handguards. Each Rifle comes with 2 - 19 round magazines, 1-Nylon Web Sling, and 1-Cleaning Kit