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armor-piercing ammunition

Defined in 2 places across 2 titles of the United States Code.

Definition.—In this section, the term “armor-piercing ammunition” means a center-fire cartridge the military designation of which includes the term “armor penetrator” or “armor-piercing”, including a center-fire cartridge designated as armor-piercing incendiary (API) or armor-piercing incendiary-tracer (API–T).

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The term “armor piercing ammunition” means—

(i) a projectile or projectile core which may be used in a handgun and which is 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

(ii) a full jacketed projectile 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.

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