Trijicon HD XR Night Sight Set Orange Front Outline for FNH FNS-40 FNX-40 and FNP-40 Black. Built of durable high quality materials these Tritium Pistol Sights by Trijicon are reliable shot after shot and protective aluminum cylinders protect the fragile tritium-phosphor lamps. When you need to quickly identify your target and engage at longer distances the Trijicon HD XR Pistol Night Sight Set is the perfect addition to your pistol. Features of Trijicon HD XR Night Sight Set: EXPANDED FIELD OF VIEW AND A PRECISION SIGHT PICTURE FOR LONGER-RANGE ENGAGEMENTS Thin front post (.122 in. width) promotes a larger field of view for fast target identification and engagement at longer 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 XR Night Sight Set Trijicon 600881: HD XR Night Sight Set Orange Front Outline for FNH FNS-40 FNX-40 and FNP-40 Black