USPFA started as an importer ..the guns were Uberti...even when they started to produce guns here in the States some parts were Uberti. Not the case I understand now, though the CNC programs are almost identical in fit.
I was lucky (dumb luck really ) I happen on to a USPFA Richards conversion....
It was assembled by Dave Anderson for USPFA and so marked.
The action on this piece is just about the best I've ever seen certainly ever owned