Trijicon 1911 Colt Cut HD Tritium Night Sight Sets Orange Front Outline The HD Night Sights were specifically created to address the needs of tactical shooters. The three dot green tritium night sight set’s front sight features a taller blade and an aiming point ringed in photoluminescent paint while the rear sight is outlined in black and features a wider U-shaped notch. This unique configuration increases visibility and quickens front sight acquisition—even in transitional lighting. Additionally, the front surface of the rear sight is steeply hooked to assist in emergency one-handed slide operation. The HD Night Sights are designed to shine—even in the most demanding conditions. Green tritium lamps are warranted for 12 years from date of manufacture. Specifications: - Make Model Fit: 1911 Commander, 1911 Government, 1911 Officers, Colt 1911 - Sight Outline Color: Orange - Sight Color: Green - Sight Style: Tritium - Set Screw Not Included