I had a firing pin once that was not properly factory heat treated.It was soft enough to bend and compress at the point so that it wouldn't reach the primer anymore.I took the gun apart,carefully straightend out and rounded the pin and then had my gunsmith throw it in to his special oven the next time he had it cranked up.Although I ordered a new pin that day, I had my old one back within a few days (free) so it got installed first.That was ten years ago and it's still working fine.I was going to put my new pin in but the heat treating worked on the old one and it hasn't shrunk a thousandth. Firing pins that can get stuck IN could maybe get stuck OUT causing a slam fire and that would be bad.