PSA 16" M4 Carbine-Length 5.56 NATO 1/7 Nitride MOE Rifle Kit With MBUS Rear Sight, Gray

Barrel: Nitride 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 gray 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.Lower Build Kit: Includes Gray Mil-Spec MOE Stock, Gray MOE grip, Gray MOE Trigger Guard, Palmetto State Armory MOE Lower Parts Kit and Mil-Spec diameter buffer tube assembly. Everything you need to finish your stripped lower!Includes: Magpul MBUS Rear Backup Sight, Black