I don’t have access to a photo as I am at work, but it is the long screw that runs through the top of the tang, through the stock, with the bottom end exposed under the tang.
You can in fact make a newer one work. I have done it.
I have one of the old Navy Arms ‘66’s like yours that a “pard” failed to disclose said details when I acquired it. (Ignorance on my part)
I bought a used, cut-down stock from a Uberti ‘73 and all that was required to fit it was to fill the screw hole with a wood dowel and redrill it. The difference in the location of the hole was just a fraction.
Randy was right.
Got notification this morning of suspicious activity with my card.
Got it sorted and order placed.
Pretty daggum pricey, but with a limit as high as 10k I guess it removes all excuses for not getting what I need now.
Back out with some more stock now…they also have Cheddite 209’s.
https://www.brownells.com/reloading/primers/pistol-primers/pistol-primers-prod79081.aspx?avs|Special-Filters_1=In%2bStock
Fancy bumping into you here. Lol
This just happened to me this morning and I use graphite, dry lock lube from the key area at any hardware store.
I also use it on my charge bars along with the typical rubber band hack.