... convenient and accurate method for sighting in any 204 firearm. Simply chamber the 204 bore sighter like a regular bullet and a ... also can provide series of Bore Sight, they are. 223, 204,30Carbine, 9mm, .22, 7.62x39, 7.62x51, 7.62x54, 8x57mm ... different gun types. 100% brass and gold-plated bore sighter 204