Each licensed firearms manufacturer and licensed firearms importer must legibly identify each firearm by engraving, casting, stamping (impressing), or otherwise conspicuously placing on the frame or receiver an individual serial number, any associated license number, and all other additional required information to a depth of at least .003 inch and in a print size no smaller than 1⁄16 inch. Used to facilitate the investigations of the criminal use of firearms. Information Collection (IC) OMB #1140–0050 is being revised to reflect an increase in costs resulting from an increase in the number of respondents and firearms covered by the information collection, and from adding both a burden hour monetized value and start-up costs based on a rulemaking that occurred since the last time this collection was renewed.