AR15 6.5 Grendel II 10.5" Upper Receiver

This AR-15 complete 6.5 Grendel pistol length upper has a 10.5" heavy barrel with a parkerized finish, and features a 1:8 twist rate, with a pistol length gas system. It includes the new 9.5" MLOK rail, an M4 flat-top billet upper receiver, a bolt carrier group, a flash hider, and a side charging handle (Gen 2). This 6.5 Grendel upper is compatible with any mil-spec AR-15 lower.