Franklin Armory BFSIII CZ S1 Cause Operation:Protected –Is not going to fireplace.Semi – Fires 1 spherical per pull.Binary – Fires one round on pull and 1 spherical on launch.* Ambidextrous Security Selector.Will Fit most CZ Scorpion firearmsAmbidextrous Security SelectorRelease round is usually canceled by simply shifting our Patented select