AR-15 Complete Upper Assembly, 16″ Parkerized 4150 Steel Heavy Barrel, Diamond Fluted, .223 Wylde, Carbine Length Gas System, 1:8 Twist w/ 12″ Rail

The BCA AR-15 Complete Upper Assembly has a 16″ diamond fluted heavy barrel profile made of 4150 steel with a parkerized finish, 1:8 twist rate and a carbine length gas system. The assembly includes a 12″ mlok rail, an M4 flat top forged upper receiver with forward assist, bolt carrier group, charging handle and flash hider. It is chambered in .223 Wylde and machined with M4 feed ramps in the barrel extension.