Hi-Viz S&W Revolver Pinned Front Sight - Red Hi-Viz front sight for S&W revolvers For S&W revolver with pinned front sight and adjustable rear sight Resin overmold the LitePipe Sturdy and bright Easy installation Smith and Wesson front revolver sight Pinned model Resin overmolded Red LitePipe Fits Smith and Wesson models 317 with 3 inch barrel 66 67 686 696 625 657 629 (except classic series and Performance Center guns) HiViz recommends gunsmith installation for all dovetail sights. Due to manufacturing tolerances, some firearms may require additional fitting.