AR15 8.5" Upper Receiver 5.56 AR15 Upper 556-AR15-Upper AR15-Upper-Receiver

This AR-15 complete 5.56 Nato pistol length upper has a 8.5" M4 contour barrel with a parkerized finish, and features a 1:7 twist rate, with a pistol length gas system. It includes the new 6.5" MLOK rail, an M4 flat-top billet upper receiver, a bolt carrier group, a flash hider, and a right-side charging (Gen2) handle (patent protected). This 5.56 Nato upper is compatible with any mil-spec AR-15 lower.