Franklin Armory BFSIII CZ S1 Cause Operation:Harmless –Will not likely fire.Semi – Fires 1 spherical for every pull.Binary – Fires 1 spherical on pull and one spherical on launch.* Ambidextrous Security Selector.Will Fit most CZ Scorpion firearmsAmbidextrous Protection SelectorRelease round is often canceled simply by going our Patented selec