This is a front S&W revolver sight, with Resin overmolding. It comes with either green, Red, or orange, fiber optic family LitePipes, and fits most Smith & Wesson models with 2.5 inch, or longer, barrels, and adjustable rear sights, excluding classic Series, and performance center guns. The installed sight height is .269 inches. Specifications: - fits: Smith & Wesson k, L, and N frame revolver - adjustable: no - fiber optic: yes - tritium insert: no - material: steel - color: orange - finish: matte black. Notes: - no modifications to the gun are needed - installed sight height: .269 inch