PSA 16" M4 5.56 NATO 1/7 Phosphate MOE Upper With BCG, CH, & Rear MBUS - Gray

Barrel: Phosphate finished 4150V chrome moly vanadium 16" barrel. Chambered in 5.56 NATO, with a 1:7 twist, M4 barrel extension, and a carbine-length gas system. Barrel is is finished off with Magpul MOE carbine-length handguards, F-Marked gas sight base, and A2 flash hider.Upper: Forged 7075-T6 A3 AR upper is made to MIL-SPECS and hard coat anodized for durability. These uppers are made for us right here in the USA by a mil-spec manufacturer.Bolt: Full-auto profile bolt carrier group. Milspec Carpenter No. 158A(R) steel bolt, Mag particle inspected. Gas Key Hardened to USGI Specifications, Fastened with Grade 8 screws, and Staked Per Mil-Spec. Includes: Magpul MBUS Rear Sight - Black#html-body [data-pb-style="62DF828D04BD2"]{justify-content: flex-start; display: flex; flex-direction: column; background-position: left top; background-size: cover; background-repeat: no-repeat; background-attachment: scroll; border-style: none; border-width: 1px; border-radius: 0px; margin: 0px 0px 10px; padding: 10px;}#html-body [data-pb-style="62DF828D04BDF"]{border-style: none; border-width: 1px; border-radius: 0px; margin: 0px; padding: 0px;}#html-body [data-pb-style="62DF828D04BE8"]{border-style: none; border-width: 1px; border-radius: 0px; margin: 0px; padding: 0px;}