Definitions for "Pump action"
Keywords:  shotgun, eject, moveable, rifle, forend
This action uses manual action on a moveable forearm, parallel to the barrel. Sliding the forearm to the rear opens the action and empties the breech or chamber by extracting and ejecting the empty cartridge case. Sliding the forearm forward loads a new cartridge into the chamber and locks the action for firing. Also called slide action.
See Action, Pump.
action mechanism in a modern rifle or shotgun; a back and forward motion of a sliding lever ejects the empty shell case and cocks the firearm and loads a new round