I've got a buddy that is a huge fan of the third-gen pistols, and owns an example of almost everything except the Chief's Special series and 40cal guns. He's got a 4506, multiple 39xx, multiple 59xx, multiple 69xx. I was thinking about getting him some nice wooden stocks for Christmas, but it seems like S&W Third Gen accessories are few and far between.
So, given the amount of Third Gen fans on here, I figured we should make a list of companies that actually make grips/stocks for the S&W Third Gens. To be clear, this isn't for you to post a random grip company that you kinda sorta think might have them for us to check, or may own grips for another gun, or just think are cool. verified available options for the third gen S&W, only.
I'll start:
KSD Grips USA: Options for the CS9, CS40, CS45, 39xx, 59xxx, 69xx and some TSW options.
https://www.ksdgripsusa.com/
Hogue: Options for a variety of third gens
https://www.hogueinc.com/grips/grips-for-smith-wesson