Improved Visibility In All Light Conditions SW3003 - Front sight fits any Smith & Wesson revolver with interchangeable front sight. Height .310" is measured from top of blade to bottom of blade excluding dovetail. Resin overmolded LitePipe available in either red or green. SW2001 - Front and rear sight set fits Smith & Wesson 410 and 910 models. Also fits S&W 909, 457 and 457D models. Resin overmolded front LitePipes available in either red or green. Height of sight from barrel up is .150". SW617 - Front sight fits S&W 617 model revolvers. Resin overmolded LitePipe, available in either red or green. Sight is not pre-drilled. Height of sight from barrel up is .165". Also fits J frames with the HIVIZ sight from the S&W factory (if that sight was shooting too high). Sight is not predrilled for roll pin. SPECS: Steel, black, matte finish .813"...