Provided is a method of repairing a firearm noise suppressor that includes a baffle chamber unit and a removable identification band with identifying indicia thereon with material of an area of the band is affixed to the baffle chamber unit to prevent the removal of the band without a machining process to the selected area. The method includes machining the affixed area of the band to remove the affixed material, removing the band from the baffle chamber unit, repairing or preplacing the baffle chamber unit, reinstalling the band on the baffle chamber unit, and affixing a different area of the band to the baffle chamber unit to prevent the removal of the band without a machining process.