Franklin Armory BFSIII CZ S1 Induce Procedure:Safe and sound –Won't fire.Semi – Fires 1 spherical for each pull.Binary – Fires 1 spherical on pull and 1 spherical on release.* Ambidextrous Security Selector.Will Match most CZ Scorpion firearmsAmbidextrous Security SelectorLaunch spherical is often canceled by just moving our Patented selector