I was tempted on a used older BP NMA pistol, but got to thinking, break a part and......
I have been shooting my wifes ASP NMA, I had to fix the bolt on it. Modified a bolt from a Pietta parts kit. Latter I found what looked like the right bolt (fair difference in the bolt end of a Pietta or Uberti) and it would not work. Go figure.
If I am going to spend the coin, unless it had some collector value I would buy a new one (and did, I have a Pietta NMA Target I am messing with on fixing the rammer shape, front sight raising to get on target at 25 yards). Worst case I can guy a part.