This ruling clarifies that a handgun of the Luger or semi-automatic Mauser type, having a barrel less than 16 inches in length with an attachable shoulder stock is a firearm that comes within the purview of the National Firearms Act.

This ruling clarifies that the Dardick Handgun, by inserting the basic mechanism into a one piece rifle unit, the gun becomes a .22 caliber rifle with a barrel of over 16 inches.  The Dardick Handgun is not a firearm within the purview of the NFA; however; it is subject to the Federal Firearms Act.

This ruling clarifies that the M14 "rifle" which operates either fully automatically or semi-automatically on a selective basis, is a basic design and function of a “machinegun” as defined in Section 5848(2) of the Internal Revenue Code of 1954, and, accordingly, subject to the provisions of the NFA.

This ruling clarifies that a .38 caliber "pen" gun and a 20-gauge weapon ostensibly designed as tear gas devices are classified as firearms within the purview of the National Firearms Act.

This ruling clarifies that under certain conditions a “Bridger” 45 is a firearm within the purview of the NFA.

This ruling advises that a Remington rolling-block carbine 7mm Mauser caliber converted into a handgun type weapon chambered for the .257 Roberts rifle cartridge is a firearm defined in the .Internal Revenue Code.

This ruling advises that a "Molgun" made of an aluminum casing, an exposed firing mechanism, and a removable insert chamber of 12-gauge bore is a firearm within the purview of the National Firearms Act.

This ruling clarifies when a device ostensibly designed for submarine spearfishing but capable of chambering and firing .22 caliber rimfire ammunition would be considered a firearm within the purview of the National Firearms Act.

This ruling clarifies that a 20-gauge gun having two barrels pointing in opposite directions, each of which is threaded to a centerpiece containing a firing mechanism and may be concealed on a person, is a firearm within the purview of the National Firearms Act.

This ruling clarifies that removal of firearms from a foreign trade zone for any purpose other than reshipment to a place outside the jurisdiction of the U.S. constitutes importation as of the time they were originally brought within the limits of the U.S.

A device for trapping animals that fires a special plastic cartridge but is not capable of firing projectiles is not a firearm within the Federal Firearms Act.