Armor piercing ammunition.
Armor piercing ammunition. Projectiles or projectile cores which may be used in a handgun and which are constructed entirely (excluding the presence of traces of other substances) from one or a combination of tungsten alloys, steel, iron, brass, bronze, beryllium copper, or depleted uranium; or full jacketed projectiles larger than .22 caliber designed and intended for use in a handgun and whose jacket has a weight of more than 25 percent of the total weight of the projectile. The term does not include shotgun shot required by Federal or State environmental or game regulations for hunting purposes, frangible projectiles designed for target shooting, projectiles which the Director finds are primarily intended to be used for sporting purposes, or any other projectiles or projectile cores which the Director finds are intended to be used for industrial purposes, including charges used in oil and gas well perforating devices.
27 CFR § 478.11
When used in this part and in forms prescribed under this part, where not otherwise distinctly expressed or manifestly incompatible with the intent thereof, terms shall have the meanings ascribed in this section. Words in the plural form shall include the singular, and vice versa, and words importing the masculine gender shall include the feminine. The terms includes and including do not exclude other things not enumerated which are in the same general class or are otherwise within the scope thereof.