quality:correction
Pump action

Pump action or slide action is a repeating action that is operated by moving a sliding handguard (the "pump") on the gun's forestock rearward (frontward on some models), ejecting any spent cartridges and cocking the hammer or striker, then moving the handguard forward to load a new cartridge into the chamber. It is most common on shotguns, though pump action rifles and grenade launchers also exist.