Franklin Armory BFSIII CZ S1 Result in Operation:Risk-free –Will never fire.Semi – Fires 1 spherical per pull.Binary – Fires one round on pull and 1 spherical on release.* Ambidextrous Basic safety Selector.Will Fit most CZ Scorpion firearmsAmbidextrous Basic safety SelectorRelease round may be canceled by just shifting our Patented selector