The M3 Convertible is a no-nonsense shotgun that military and police all over the world depend on. This shotgun can be quickly changed from a fast cycling semi-auto for conventional loads to a manual pump action for low energy special purpose loads such as gas, beanbag and rubber bullet loads. For semi-auto action, merely rotate the selector ring 1/4 turn, push the forend forward and release the selector, to switch back to pump action simply reverse the procedure by pulling back after the selector ring is rotated to lock the forend to the action bars.