Just received a Savage 242 series C 410 over 410 from a relative. The upper firing pin seems to be broken and also seems to be smaller in diameter than the lower. I checked Numrich and it looks like there was a rifle firing pin for the upper barrel. Does anyone know if that is the one I need? It's a nice little gun and will be a blast to shoot for me and the kids once it's up and running properly so I'd like to get it working. Any info on it would be appreciated.