With the “Sunset” of the 1994 Assault Weapons Ban on Sept. 13th, 2004, Bushmaster can again offer features of the AR15 type rifle that had been deemed illegal for the past 10 years - such as flash suppressors, bayonet lugs, high capacity magazines and telestocks. This assembly is complete and ready to use - all highest quality components - just snap onto your Upper Receiver. NOTE: These may still be illegal for purchase in some States. Check your own State and County laws to determine the local legality of AR type Rifles with Telestocks. Not legal in CA