I'm no expert on Number 3s (or anything else for that matter), but 8 can't tell much of anyth8mg from those pictures. Do you have any more that are more clear/show more detail?
Thank you! That's the first picture I've seen that shows the what the male fitting looks like. With your info I was able to find this example:
I wonder the odds of finding an original (or even a repro) stock with this type of fitting?
Hello. I ran across a Smith & Wesson Model 3 "American" revolver that seems to have an unusual modification for a shoulder stock.
Unlike the models that were made at the factory for a stock (and thus accepts the S&W manufactured stock), this one has what looks to be some sort of 'insert &...