Would any of them fit an SD9 VE?
A few of the very old S&W semis had canted bases and straight mag chambers (instead of the other way around on all S&W semis).
I went on a website that specializes only in mags, and if you have an outdated or obscure gun, they would probably have a mag for it.
That's why I asked the question about the M&P mag chamber fitting the SD if it had a canted base plate.