Shotgun

A shotgun is a firearm that is usually designed to be fired from the shoulder, which uses the energy of a fixed shell to fire several small spherical pellets called shot or a solid projectile called a slug. Most shotguns are chambered for 12 gauge buckshot shells.

Shotguns come in semi-automatic, pump-action, break-action (side-by-side double-barrel, over/under double-barrel, quadruple-barrel), fully automatic, bolt action, and revolver variants.