I don't like the piccatiny or weaver rails on the revolvers, I htink they look too large and don't fit it well, plus, a pinched chamfer is not as strong as a dual dovetail design. So I prefer the leupold dual dovetail mount. It also has the step in the back and a shaped bottom to conform to the revolver frame, so the screws do not take most of the recoil, they just hold the base down. They hold up to my 460 Magnum just fine and come in blued or nickel.

1-Piece Dual-Dovetail Pistol Scope Base S&W K L N Frame (Pre-Drilled Tapped) Silver

1-Piece Dual-Dovetail Pistol Scope Base S&W K L N Frame (Pre-Drilled Tapped) Gloss

It is definitely not a quick detach though.