Compare SIG SAUER X-Ray3 Pistol Sight Sets to other conventional sights and you will see the blacked-out rear sight and the high contrast front sight of the X-Ray3, make target acquisition intuitive and fast and in any light condition. This 3-Dot tritium system has a superior glowing illumination in low-light and remains bright and white for daylight conditions. No more changing sights from night to day patrols, keeping your sights consistent for all your work or hunting light conditions.