Franklin Armory BFSIII CZ S1 Cause Procedure:Secure –Won't fireplace.Semi – Fires 1 spherical for each pull.Binary – Fires one spherical on pull and 1 round on launch.* Ambidextrous Safety Selector.Will In shape most CZ Scorpion firearmsAmbidextrous Safety SelectorRelease spherical can be canceled by simply transferring our Patented selector