Franklin Armory BFSIII CZ S1 Induce Operation:Harmless –Will not likely fire.Semi – Fires 1 round for each pull.Binary – Fires one spherical on pull and one round on release.* Ambidextrous Security Selector.Will In good shape most CZ Scorpion firearmsAmbidextrous Safety SelectorRelease round might be canceled by just going our Patented select