I have a 1998 12Ga SIACE self cocking ejector hammer gun that also has a manual tang safety. So far, I've used the gun on 5 Stand and Sporting Clays only. I leave the manual safety in the off position. This 27" barreled gun fits and shatters the clays nicely, if I do my part - the right barrel is choked 0.013 and the left 0.036.