Hiviz SW10020 S&W Front Sight S&W 317 W/3"Barrel,66,67,686,696,625,657,629 - Front sight for Smith & Wesson models 317 with 3" barrel, 66, 67, 686, 696, 625, 657, 629 (except classic series and Performance Center guns). Resin overmolded LitePipes available in either red, green, or orange. Sight is not pre-drilled due to some models having varying pin locations. Height of sight from barrel up is .269".