The AR-15 Steel Barrel Nut available for sale is compatible with the AR15, M16, and M4 barrel nut assembly. This Steel Barrel Nut is a high quality component provides excellent fit and reliable function on AR15, M16, and M4, manufactured according to strict military specifications. This Steel Barrel Nut designed to offer a precise fit and dependable performance. The Steel Barrel Nut can be used for upgrading, replacing, or constructing a new AR-15 and have a limited lifetime warranty.
