This Trijicon HD Night Sight Set was created specifically to meet the needs of tactical shooters, and the sights are covered by a 12-year warranty that guarantees usable illumination. This night sight set was designed to fit Smith & Wesson M&P, SD9 VE, and SD40 VE models. This Trijicon Night Sight Set includes two high-definition, three-dot green tritium sights. The front sight has an orange outline and features a tall blade and luminescent aiming point for increased visibility. The rear sight has a wide, U-shaped notch and a black outline