I'm working on a 32-20 and need to find parts. There were 750,000 of these guns made (total) and the parts are as rare as hen's teeth. Is there any way to cross reference part numbers with different models and calibers? I'm sure Colt used the same parts for different models of the the "same" Gun. I'm not a gunsmith and I understand I will have to get one involved when I get ready to have this gun repaired. But, what I'm looking for is what guns of this family use the same parts as the gun I'm working on and how do I cross reference them. Also, there were three generations of this gun. Is there a way to cross reference the parts numbers from the different generations? For example I saw a NOS 2nd gen cylinder for the 32-20. Is that the same as the one on the gun I'm working?