PUBLIC LAW 90-618-OCT. 22, 1968
"SEC. 5842. IDENTIFICATION OF FIREARMS. "(a)
IDENTIFICATION OF FIREARMS OTHER T H A N DESTRUCTIVE
DEVICES.—Each manufacturer and importer and anyone making a firearm shall identify each firearm, other than a destructive device, manufactured, imported, or made by a serial number which may not be readily removed, obliterated, or altered, the name of the manufacturer, importer, or maker, and such other identification as the Secretary or his delegate may by regulations prescribe. "(b) FIREARMS WITHOUT SERIAL NUMBER.—Any person who possesses a firearm, other than a destructive device, which does not bear the serial number and other information required by subsection (a) of this section shall identify the firearm with a serial number assigned by the Secretary or his delegate and any other information the Secretary or his delegate may by regulations prescribe. "(c) IDENTIFICATION OF DESTRUCTIVE DEVICE.—Any firearm classi-
fied as a destructive device shall be identified in such manner as the Secretary or his delegate may by regulations prescribe. "SEC. 5843. RECORDS AND RETURNS. "Importers, manufacturers, and dealers shall keep such records of, and render such returns in relation to, the importation, manufacture, making, receipt, and sale, or other disposition, of firearms as the SecI'etary or his delegate may by regulations prescribe. "SEC. 5844. IMPORTATION. "No firearm shall be imported or brought into the United States or any territory under its control or jurisdiction unless the importer establishes, under regulations as may be prescribed by the Secretary or his delegate, that the firearm to be imported or brought in is— "(1) being imported or brought in for the use of the United States or any department, independent establishment, or agency thereof or any State or possession or any political subdivision thereof; or " (2) being imported or brought in for scientific or research purposes; or " (3) being imported or brought in solely for testing or use as a model by a registered manufacturer or solely for use as a sample by a registered importer or registered dealer; except that, the Secretary or his delegate may permit the conditional importation or bringing m of a firearm for examination and testing in connection with classifying the firearm. "SEC. 5845. DEFINITIONS. "For the purpose of this chapter— " (a) FIREARM.—The term 'firearm' means (1) a shotgun having a barrel or barrels of less than 18 inches in length; (2) a weapon made from a shotgun if such weapon as modified has an overall length of less than 26 inches or a barrel or barrels of less than 18 inches in length; (3) a rifle having a barrel or barrels of less than 16 inches in length; (4) a weapon made from a rifle if such weapon as modified has an overall length of less than 26 inches or a barrel or barrels of less than 16 inches in length; (5) any other weapon, as defined in subsection (e); (6) a machinegun; (7) a muffler or a silencer for any firearm whether or not such firearm is included within this definition; and (8) a destructive device. The term 'firearm' shall not include an antique firearm or any device (other than a machinegun or destructive device) which, although designed as a weapon, the Secretary or his delegate finds by reason of the date of its manufacture, value, design, and other characteristics is primarily a collector's item and is not likely to be used as a weapon.