Armor-piercing bullet

A firearm projectile designed to penetrate protective armor, typically by concentrating impact force through a hard or dense core that resists deformation.

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Penetration mechanics: The study of how projectiles and other moving bodies enter and deform materials. Explains how impact speed, target resistance, and projectile structure govern penetration.
Small arms ammunition: Cartridges and their components designed for use in small firearms. Armor-piercing bullets are a specialized type of small-arms projectile.
Armor-piercing incendiary ammunition: Ammunition combining armor penetration with an incendiary effect after impact. It adds a secondary effect to the penetration role of an armor-piercing projectile.
Full metal jacket bullet: A bullet with a softer core enclosed by a harder metal jacket. A jacket alone does not make a bullet armor-piercing; core design and performance differ.
International humanitarian law: The body of international law governing conduct during armed conflict. It sets the legal framework for evaluating ammunition and its use in war.
Ballistic penetrator: A hard projectile component designed to defeat a target by concentrating impact energy. The penetrator is the component that typically does the armor-piercing work.
Bullet: A projectile propelled from a firearm, usually by expanding gas from a cartridge. The armor-piercing design is one specialized form of bullet.
Armor-piercing discarding sabot: A large-caliber projectile that uses a sabot to launch a narrower, dense penetrator. It applies the penetrator principle to tank guns and other high-velocity weapons.
Hollow-point bullet: A bullet with a cavity in its nose designed to expand on impact. Expansion favors wound formation rather than resisting deformation to penetrate armor.
Small Arms Ammunition Manufacturers Institute: A United States trade association that publishes voluntary standards for firearms and ammunition. Its standards help define ammunition dimensions and performance in commercial contexts.