Features – Barrel: Chrome Moly steel phosphate coated barrel. Chambered in 5.56 NATO with a 1/7 twist M4 barrel extension and a carbine-length gas system. Barrel is finished off with a DPMS 10.5 Lightweight M-Lok rail low-profile gas block and A2 flash hider. – Upper: Forged 7075-T6 A3 AR upper is machined to MIL-SPECS and hard coat anodized. Uppers include forward assist and dust cover. These uppers are made for us right here in the USA by a mil-spec manufacturer. – Bolt: Full-auto profile bolt carrier group. Shot-peened mil-spec Carpenter No. 158® steel bolt. Gas Key Hardened to USGI Specifications Fastened with Grade 8 screws and Staked Per Mil-Spec. – Lower: These forged lowers are quality made using 7075-T6 aluminum and are marked MULTI for caliber. Finish is hard coat anodize. Finished with a Magpul MOE Grip SB Tactical SBA3 Pistol Stabilizing Brace and 6 position 7075 buffer tube. The fire control group is a DPMS Panther Polished Trigger (PPT) single-stage assembly. – Details – Barrel Length: 11.5 – Barrel Profile: A2 – Barrel Steel: Chrome Moly Vanadium – Barrel Finish: Phosphate – Chrome Lining: No – Muzzle Thread Pattern: 1/2 x 28 – Twist Rate: 1 in 7 – Barrel Extension: M4 – Gas System Length: Carbine – Diameter at Gas Block: .750 – Gas Block Type: Low-Profile Gas Block – Muzzle Device: A2 -style – Receiver Material: Forged 7075-T6 – Receiver Type: M4 – Handguard Type: DPMS 10.5 Lightweight M-Lok – Bolt Material: Carpenter 158 Steel – Bolt Carrier Profile: Full Auto – Fire Control Group: Panther Polished Trigger (PPT) – Grip: Magpul MOE Grip Black – Buffer Tube: 7075 T6 Aluminum – Adjustment: 6 Position – Pistol Brace: SB Tactical SBA3 Pistol Stabilizing Brace