Raimey,

I found this link today http://www.gunsamerica.com/958942640/Gun..._Combo_USE.htm#

It appears to be a very utilitarian version of the same action / frame type as the guns we're discussing.

How can I find out where all these frames came from originally? It appears that about 1% of all the drillings I've seen use this very distinctive and unique stock-to-receiver inletting and I want to learn more.