High-quality replacement for factory front sight housing includes bayonet lug, so you can upgrade a rifle manufactured during the now-expired Assault Weapons Ban to authentic military appearance. Forged from C1137 steel, then heat-treated for superior strength before final machining to military specifications. Ready to accept an A1- or A2-type front sight post, spring, and detent of your choice. Hole for sling swivel rivet is predrilled. Holes must be drilled for sets crews or taper pins for precise fit to your gun. Matte black Parkerized finish matches standard mil-spec finish. HBAR fits both M16A2 and M4 contour heavy barrels currently used by the U.S. Military. Mfg: Double Star SPECS: Forged C1137 steel, matte black Parkerized finish. Height from top of barrel to top of sight housing without blade installed - 1.9" (4.8cm). HBAR - Fits .750" (19.1mm) OD M16A2 and M4 contour barrels.