Bullet

A bullet is a kinetic projectile, a component of firearm ammunition that is shot from a gun barrel. They are made of a variety of materials, such as copper, lead, steel, polymer, rubber and even wax; and are made in various shapes and constructions, including specialized functions such as hunting, target shooting, training, and combat. Bullets are often tapered, making them more aerodynamic.

Bullet size is expressed by weight and diameter in both imperial and metric measurement systems.
Bullets do not normally contain explosives but strike or damage the intended target by transferring kinetic energy upon impact and penetration.

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