Franklin Armory BFSIII CZ S1 Induce Operation:Safe –Will not hearth.Semi – Fires one spherical per pull.Binary – Fires 1 round on pull and 1 round on launch.* Ambidextrous Protection Selector.Will Suit most CZ Scorpion firearmsAmbidextrous Basic safety SelectorLaunch spherical may be canceled simply by going our Patented selector out of Binar