Franklin Armory BFSIII CZ S1 Result in Operation:Harmless –Will likely not fire.Semi – Fires 1 spherical for every pull.Binary – Fires one spherical on pull and 1 round on release.* Ambidextrous Security Selector.Will In good shape most CZ Scorpion firearmsAmbidextrous Safety SelectorRelease round is often canceled by just shifting our Patent