FightLite MCR 5.56 NATO 16.25" Dual-Feed Upper Receiver Assembly, M-LOK, Black Manganese Phosphate - MCR556DFRM

Complete upper receiver assembly for AR-15 platforms chambered in 5.56 NATO with a 16.25" quick-change barrel and M-LOK handguard. Features adjustable sights, manganese phosphate finish, and includes buffer, bolt catch, spacer, compensator, and 100 M27 links. Designed as a modular, belt-fed upper that interfaces with standard MIL-Spec AR-15 lower receivers.