Trijicon caters to tactical shooters. Their Trijicon HD Orange Front Outline Night Sight Set is an incredibly powerful tool for improving the accuracy of glock operation, even in uneven or bad lighting. The triple green dot tritium night sight features an orange outline to make night-firing significantly more reliable. The sights are compatible with a large variety of glock models. Target acquisition and visibility are instantly increased. The aiming point blade is taller to make aiming even easier. The front sights feature photo-luminescent paint, which means there is no need for batteries. The back sight is both hooked and is built with a wide U-shaped notch. The hooked aspect allows for emergency one-handed slide operation. The whole set up is durable and secure, plus it features a five year warranty from the manufacture date. When you go with Trijicon, you are getting your money's worth.