DescriptionBarrel: 16" Length 4140 Chrome-moly steel AP4Contour barrel 6 grooves, right-hand 1x10 twist,button rifled 308 Panther Flash HiderChamber: 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 SpecSights: Standard A2 front sight assembly Detachable Rear Sight IncludedWeight: Empty - 8.25 lbs. Length:Extended: 38" Collapsed: 34.25" Upper Receiver:A3 style flattop Thick walled, extruded from 6066-T6 aluminum Hard coat anodized per Mil Spec and Teflon coated black Dust cover Shell deflector and forward assist machined as one unit Right hand ejection Standard Sight BaseLower 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 groupStock: AP4 - 6 position, telescoping fiber reinforced polymer Handguards: Carbine length ribbed free float tube. Each Rifle comes with 2 - 19 round magazines, 1-Nylon Web Sling, and 1-Cleaning Kit