Abstract: Serialized firearm parts, such as silencers, are identified using plates permanently affixed to the parts by welding, brazing, riveting, pinning and welding or other permanent techniques. Methods of effecting repair or replacement of silencers and silencer parts employ removing the plates by drilling or machining the welds and permanently affixing the plate to a replacement part.

Abstract: A suppressor for a firearm uses a container tube to house pluralities of first and second baffles having truncated cones. The baffles may be arranged so that all of their cones project toward the muzzle of the firearm, or so that the plurality of second baffles, located distal to the muzzle, project away from the muzzle. The baffles include blast baffles having spacer portions which project toward and away from the muzzle of the firearm.