Franklin Armory BFSIII CZ S1 Result in Procedure:Secure –Won't fireplace.Semi – Fires 1 round for each pull.Binary – Fires one spherical on pull and 1 round on release.* Ambidextrous Protection Selector.Will Suit most CZ Scorpion firearmsAmbidextrous Protection SelectorRelease round could be canceled by just moving our Patented selector away