This AR-15 Complete 5.56 rifle length upper has a 20" Government barrel with a black nitride finish, and features a 1:7 twist, with a Rifle length gas system. It includes the new 15" MLOK handguard, a bolt carrier group, flash hider, and a right-side charging handle (Gen 2, patent pending). This 5.56 upper is compatible with any mil-spec AR-15 lower.
