Franklin Armory BFSIII CZ S1 Result in Procedure:Protected –Won't fire.Semi – Fires 1 spherical for each pull.Binary – Fires 1 spherical on pull and one round on release.* Ambidextrous Safety Selector.Will Fit most CZ Scorpion firearmsAmbidextrous Safety SelectorLaunch spherical might be canceled simply by going our Patented selector outside