You have not provided enough information to diagnose the problem. Did it ever work/fire? Why do you think the problem is firing pin or springs? Have you determined for sure that the firing pin is broken?
It is nickel, not stainless.
Have you tried a thorough cleaning? I'd remove the grips and hose it out with Gun Scrubber or automotive choke cleaner in case the internals are gummed up and preventing function. Then lightly lubricate and try again.