Product DetailsDetailsBrand: DPMS Barrel Length: 16Barrel Material: 4150V Chrome Moly Vanadium SteelBarrel Finish: PhosphateBarrel Profile: M4Chamber: 5.56 NATOTwist Rate: 1:7Extension: M4Gas System: Carbine-LengthGas Block Type: Low Profile .750 DiameterUpper Receiver: Forged 7075 T6 AluminumReceiver Style: M4 Flat top with feed rampsReceiver Finish: Hardcoat AnodizedForward Assist: NoDust Cover: NoHandguard Style: DPMS M-Lok Free Float RailBolt Steel: Carpenter 158, Mag Phosphate coatedBolt Carrier Steel: 8620, Chrome LinedStaked Gas Key: YesLower Receiver: Forged 7075 T6 AluminumReceiver Finish: Hardcoat AnodizedFire Control Group: AR-15 Mil-Spec Fire Control GroupBuffer Tube: 7075 T6 Aluminum Mil-Spec TubeAdjustment: 6-position collapsibleStock: PSA Classic Carbine StockMagazine: (1) 30-Round Magazine Weight: 7 LbsOAL: 32"FeaturesLightweight DPMS AR-15 features a 16 5.56 NATO phosphate-finished 4150V chrome moly vanadium steel barrel with a 1 in 7 twist. This slick side rifle omits the dust cover and forward assist for a streamlined design. Includes a DPMS M-Lok free-float rail, Carpenter 158 bolt, 8620 carrier, and 6-position collapsible stock.