WoW! The firing pin shouldn't be breaking!!! ....
.....Maybe once in'a'while on a dark night or a blue moon?...but not every time to the range! ....
......Maybe the breechblock I sent, or the firing pin you have, is not correct??... Send me the breech block, or the whole toggle train, back and I'll test & correct, and / or, send you another with a firing pin already installed.... If you want to take all that scope "stuff" off.. I also have a rear toggle with a sight on it... Best to you, til...lat'r...GT...
(hopefully with a little help, you can find, recover, and re-attach your butt!!!!!)