PSA 10.5" Pistol-Length 300AAC Blackout 1/8 Nitride 9" Lightweight Hex M-Lok MOE EPT SBA3 Pistol Kit

Barrel: 10.5" 4150V chrome-moly steel chambered in 300 Blackout, with a 1:8 twist rate, M4 barrel extension, pistol-length gas system, and nitride treated for accuracy and durability. The barrel is finished off with a PSA 9" Lightweight Hex Full Picatinny M-Lok Free Float Rail, .750" low-profile gas block, and A2 Flash Hider.Upper: Forged 7075-T6 A3 AR upper is hard coat anodized. These uppers are made for us right here in the USA!Bolt: Full-auto profile bolt carrier group. Shot-peened, mil-spec Carpenter No. 158A(R) steel bolt. Gas Key Hardened to USGI Specifications, Fastened with Grade 8 screws, and Staked Per Mil-Spec and the carrier 8620 steel.Build Kit: A high quality lower build kit with everything you need to assemble your AR-15 lower into a pistol. Features Enhanced Polished Trigger (EPT), Magpul Grip, Magpul Trigger Guard, and black oxide-coated hammer and trigger springs. Also, includes SB Tactical SBA3 Adjustable Pistol Brace, castle nut, latch plate, carbine buffer spring, 5 positioning mil-spec buffer tube, and standard carbine buffer.