weapon that performs all steps necessary to prepare the weapon to fire again after firing, capable of firing only once with each activation of the trigger From Wikipedia, the free encyclopedia
A semi-automatic, or self-loading firearm is a gun that requires only a trigger pull for each round that is fired, unlike a single-action revolver, a pump-action firearm, a bolt-action firearm, or a lever-action firearm, which require the shooter to manually chamber each successive round. Also, unlike a double-action revolver, power from one shot is used load the next, instead of using power from pulling the trigger.
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