I think there is certainly a market, but I wouldn't venture a guess as to how big. I think if you were to stock them you could sell a few from time to time if word gets out, but I think it would be more of a service than a money maker.
There was a guy that had the firing pin bushings on ebay for a while, but I haven't looked for a long time. Those go bad more often than the pins. I have the "Plans and Specifications" book and could get you some dimensions if you wanted to make some up.
Put me on the list for a set of pins, and a couple sets of bushings if you decide to make them.
Bryndon
