Franklin Armory BFSIII CZ S1 Bring about Operation:Harmless –Will likely not fire.Semi – Fires 1 spherical per pull.Binary – Fires 1 round on pull and one round on release.* Ambidextrous Safety Selector.Will In shape most CZ Scorpion firearmsAmbidextrous Protection SelectorRelease round can be canceled by simply shifting our Patented selector