This AR-15 Complete 5.56 rifle upper has a 16" M4 with a black nitride finish, and features a 1:7 twist, with a carbine length gas system. It includes the new 15" MLOK rail, a M4 flat-top forged upper receiver, a bolt carrier group, flash hider, and a rear charging handle. This 5.56 upper is compatible with any mil-spec AR-15 lower.
BCG Included
