Magazine One magazine is a detachable container which holds on ammunition. In some cases, all mag fits within the gun for instance, within the grip to one pistol. For many guns, that it attaches alone outside of the weapon.When the trigger try taken downwards, the springtime gets full of a piece of metal your strikes back once again your round out of your primer. Some sort of primer acts including one sparkplug inside a engine. It Makes a spark in the casing which contains gunpowder hence creating one explosion.