Nick,

It's under "Cowboy Parts" and "Ladder and Tang Sights"

http://www.smithenterprise.com/1400_Ladder_Tang_Sights_Page.htm

I don't have a picture handy as I'm a work. Mine is on a modified pad for the bead on a shotgun barrel, raising the rear portion of the sight up .1". If I knew then what I know now I'd have had the sight dovetail cut about two inchers further toward the action to increase sight radius and raise the rear sight above the front of the action.

live and learn