. . . "Curios and Relics License issued by the Bureau of Alcohol, Tobacco and Firearms, who knowingly has in his possession any body armor breaching or penetrating ammunition, which means: (a) ammunition primarily designed for use in a handgun, and (b) which is comprised of a bullet whose core or jacket, if the jacket is thicker than.025 of an inch, is made of tungsten carbide, or hard bronze, or other m" .