PSA 10.5" Pistol Length 300BO 1/7 Nitride 9" Lightweight Hex MLOK MOE EPT SBA5 Pistol

Barrel: Chambered in 300 AAC Blackout, this 10.5 inch barrel features a 1 in 7 twist rate, M4 barrel extension, and a pistol-length gas system optimized for short-barrel performance. A Nitride finish enhances corrosion resistance and service life. The barrel assembly is completed with a PSA 9 inch Lightweight Hex 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 Enhanced Polished Trigger single-stage fire control group, a Magpul MOE grip, an SBA5 adjustable pistol stabilizing brace, and a 6-position 7075 aluminum buffer tube.