Armor-piercing bullets typically contain a hardened steel, tungsten, or tungsten carbide penetrator encased within a copper or cupronickel jacket, similar to the jacket which would surround lead in a conventional projectile.

Can you legally buy armor piercing bullets?

A: Yes. Under federal law it is perfectly legal to make, sell and purchase “armor-piercing” ammunition as long as you have the proper licensing.

What are armor piercing rounds called?

Small arms. Armor-piercing rifle and pistol cartridges are usually built around a penetrator of hardened steel, tungsten, or tungsten carbide, and such cartridges are often called 'hard-core bullets'.