Barrel: Chambered in 5.56 NATO, this 11.5 inch barrel features an M4 barrel extension and a carbine-length gas system for balanced reliability and dwell time. A phosphate finish provides corrosion resistance and durability under hard use. The barrel is paired with an FDE PSA 10.5 inch Lightweight M-LOK free float rail, a .750 low-profile gas block, and an A2 flash hider. Upper: Forged 7075-T6 A3 AR upper receiver machined to mil-spec standards and finished with a hard coat anodized treatment for durability. The upper includes a forward assist and dust cover and is manufactured in the USA by a mil-spec producer. Bolt: Full-auto profile bolt carrier group with a Carpenter No. 158 steel bolt that is shot-peened and built to mil-spec standards. The gas key is hardened to USGI specifications, secured with Grade 8 fasteners, and properly staked for long-term reliability. Lower: Forged 7075-T6 aluminum lower receiver marked MULTI for caliber compatibility and finished with a hard coat anodized coating. The lower is equipped with a PSA Classic grip, an H&R HAR-15 adjustable pistol stabilizing brace, and a 6-position 7075 aluminum buffer tube.