AR15 16" Upper Receiver 5.56 AR15 Upper 5.56-Upper-Receiver 5.56-AR15-Upper (2)

This AR-15 Complete 5.56 rifle length upper has a 16" M4 with a black nitride finish, and features a 1:7 twist, with a mid-length gas system. It includes a 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.