PSA 16" M4 Carbine-Length 5.56 NATO 1/7 Phosphate Classic Upper w/BCG & Charging Handle

Barrel: 4150V Chrom Moly steel. Chambered in 5.56 NATO, with a 1/7 twist, M4 barrel extension, and a carbine-length gas system. This phosphate coated M4 profile barrel is finished off with a standard handguard, F-Marked gas sight base, and A2 flash hider.Upper: Forged 7075-T6 A3 AR upper is machined to MIL-SPECS and hard coat anodized. 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. 158(R) steel bolt, Shot Peened, High pressure tested, Mag particle inspected, Gas Key Hardened to USGI Specifications, Fastened with Grade 8 screws, and Staked Per Mil-Spec.