I have a complete S&W Top Break Double Action 3rd model that I am in search of a part for. I have managed to break the cylinder stop leaf spring (shown as part 8 in the Numrich exploded view) and no one seems to have them. If anyone might have some suggestions on a) where one might find one and b) is my gun an "old" or "new" model part....serial number is 274XXX.

Thanks!

Mike