Okay, on a manual safety gun like a CZ or a Tanfo if you start to pull the trigger and take your finger off the trigger and drop the hammer it will not fire the gun, it drops to half-cock just like a de-cocker. In my opinion it's much safer resting at half-cock than on the firing pin. Also I have shot most every gun that exists that is legal for SSP, and won with them all ! I have found my system.