What problem are you trying to solve?

1) What is special about this gun that you have to have it?
2) As other posters have stated, there are plenty of non-production guns used and repaired by qualified gunsmiths. Yes, a part from the factory would be nice but sometimes that's not an options.
3) You could purchase a BL Beretta, Browning Superposed, Win 101 and parts would be a little easier to find.

If you're worried about parts, then why buy the gun in the first place?