I've owned 3 of those guns, the best person to talk to about them is Brian Nooby in Halfmoon Bay / Madeira Park BC, he's a gunsmith. For your firing pin, he will know where to get one, or will have one. Numrich I find was usually sold out. After learning everything I could about this platform and using the 30-30/20, 357/20, 223/20 models I eventually gave up and sold them all. The model 42 Savages will most likely come out in other calibers, destroy the value of the model 24's (except the CC version), and not suck as hard so I will most likely pick one of those up.