PSA 10.5" Carbine-Length 5.56 NATO 1/7 Nitride 12" Lightweight M-Lok Upper With BCG & CH - 5165449196

Overview

This upper assembly features a 10.5-inch 4150V chrome moly vanadium steel barrel with a nitride finish, chambered in 5.56 NATO with a 1:7-inch twist. It utilizes a carbine-length gas system, a low-profile gas block, and a PSA 12-inch slant-end M-Lok rail. The assembly includes a 6061 aluminum fluted flash can, which directs muzzle gases and noise forward. The upper receiver is a forged 7075-T6 A3 unit with a hard-coat anodized finish. The bolt carrier group is comprised of a shot-peened Carpenter 158 steel bolt and a parkerized carrier with a chrome-lined interior, featuring a gas key secured with grade 8, mil-spec staked fasteners.

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