PRODUCT DETAILS FEATURESBarrel: The Nitride finished, 308 WIN 1/10 twist, rifle-length gas system upper is paired with a DPMS Panther Arms Classic Handguard, front sight base gas block, and an A2-style muzzle device. The gas system is enhanced with a nitride gas tube in order to better resist high heat and corrosion. Upper: Precision machined from forged 7075-T6 aluminum, then Black anodize hard coated to MIL-8625 Type 3 class 2.Bolt Carrier Group: Tool craft 9310 steel bolt assembly with extra strength extractor springs that is nitride for increased durability. 8620 carrier, nitride treated, with a nitride treated gas key properly staked with grade 8 fasteners. A 7075 T6 aluminum charging handle is also included. Lower: Precision machined from forged 7075-T6 aluminum, these lowers are then Black anodize hard coated to MIL-8625 Type 3 class 2. With an Panther Polished Trigger (PPT), a DPMS Classic 6-position stock, and a DPMS Custom Over-molded A2 Grip. This is an ideal platform for the .308 cartridge. DETAILS Barrel Length: 18"Barrel Material: Chrome Lined Nitride CoatedBarrel Profile: HeavyChamber: .308 WINTwist Rate: 1 in 10"Extension: M4Gas System: Rifle-lengthGas Block Type: Front Sight BaseUpper Receiver: Forged 7075 T6 AluminumReceiver Style: DR10 Flat top with Feed RampsReceiver Finish: Hard coat AnodizedForward Assist: YesBolt Carrier Group: Yes, Toolcraft PA10 BCG with extra power extractor springStaked Gas Key: YesLower Receiver: Forged 7075 T6 AluminumReceiver Finish: Hard coat AnodizedFire Control Group: Panther Polished Trigger (PPT)Buffer Tube: 7075 T6 Aluminum, 6 PositionStock: DPMS Classic 6 position adjustable Stock, BlackGrip: DPMS Custom Over-molded Grip, BlackMagazine: 20 Round PMAGDust Cover: YesHandguard Type: DPMS Classic Polymer Rifle-Length Handguard