This AR-15 complete 6.5 Grendel rifle length upper has a 16" M4 barrel with a parkerized finish, and features a 1:8 twist rate, with a carbine length gas system. It includes a 15" MLOK rail, an M4 flat-top billet upper receiver, a bolt carrier group, a flash hider, and a right-side charging (gen 2) handle. This 6.5 Grendel upper is compatible with any mil-spec AR-15 lower. This has the new handguard.
BCG Included
