I know it's been asked before

[Jingles]

+1 for Altamont. They make the "Bateleur", a square-butt stock for round-butt revolvers. About mid way down the page. If I'm not mistaken Altamont makes factory stocks for S&W.

Very Nice fit and finish.

Smith & Wesson N Frame Round Butt Revolver Grips | Altamont Company