Trijicon 1911 Colt Cut HD Night Sight Set - Orange Front Outline. The front surface of the rear Fiber Optic Night Sight by Trijicon is steeply hooked to assist in emergency one-handed slide operation. The Trijicon Illuminated Colt Cut 1911 HD Handgun Front & Rear Night Sight has a three dot green tritium front sight that 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 Trijicon Illuminated Weapon Sight is made using extremely durable materials that are guaranteed to last an incredibly long time. For a great way to shine at all hours of a given day choose the Trijicon HD Green Tritium Illuminated Night Sight Set. Specifications for Trijicon HD Night Sights for 1911 Colt Cut Handgun: Manufacturer: Trijicon Gun Make: Para Ordnance Colt Gun Model: Para Ordnance P13 Colt 1911 Combat Commander Color: Green Rear Sight Color: Green w/Black Outline Fabric/Material: Metal Front Material: Tritium/Paint Gun Type: Pistol Attachment Type: Professional installation recommended. Front Blade Height: 0.215 in Rear Blade Height: 0.23 in Additional Features: The front sight tenon size measures 1/8 inch fits Para Ordnance P13 excluding Limited version Features of Trijicon HD Night Sights for 1911 Colt Cut Handgun: Enhanced front-sight acquisition in bright transitional and no-light situations: Glow-in-the-dark photoluminescent-painted front outline combines with a "U" notch rear and black-painted rear outlines to quickly draw your eye to the front post in all lighting conditions. One-handed slide manipulation: Steeply hooked front surface to assist in an emergency one-handed slide manipulation. Instantly visible sight picture in no-light and low-light situations: Tritium phosphor-filled glass lamp illuminates sights for high visibility in all lighting conditions. Enhanced protection from heavy recoil and harsh cleaning solvents: Tritium gas lamps are contained within protective aluminum cylinders and have additional silicone rubber cushioning. Evenly distributed light from tritium lamps: Each Trijicon tritium lamp is capped with a sapphire jewel that helps evenly distribute the light and also acts as an additional layer of protection from puncture and cleaning solvents. Package Contents: Trijicon HD Illuminated Night Sight Set for Colt Cut 1911 CA101O: Trijicon HD Illuminated Night Sight Set - 1911 Colt Cut Orange Front Outline