Hi doubbletrouble,
I've been able to replicate a few simple firing pins by measuring the remaining good firing pin then finding a drill bit (or in one case a SS fine thread bolt) of the same diameter, I break the drill bit so that all that's left is the shaft. Next I chuck it into my power drill and then using a fine emery wheel on my bench grinder I grind the steel shaft to shape by spinning it with the drill against the spinning wheel on my bench grinder.
Give it a try, all it'll cost you is maybe a few drill bits.
Steve
