Rugged, all-steel bodies surround a highly visible TRU-DOT tritium lamp for better sight definition in dark and low-light conditions. Easily and fully adjustable for both windage and elevation with positive, all-steel detents built to withstand the rigors of duty use and rough, inclement hunting conditions. On S&W revolvers, a new rear leaf, screw and nut are provided; front sight replaces the factory colored insert. Mfg: Meprolight