Trijicon 600596 HD Night Sight Set 3-Dot Tritium Green with Yellow Outline Front, Green with Black Outline Rear Black Frame for HK USP

The HD Night Sights were specifically created to address the needs of tactical shooters. They are a self-luminous, three-dot night sight set that features a highly visible photoluminescent paint outline to quicken sight acquisition, along with a "U" notch rear sight that's angled and serrated to reduce glare and aid in front-sight focus. The Tritium gas lamps are contained within protective aluminum cylinders and have additional silicone rubber cushioning. 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.