XD HR Night Sights for Smith & Wesson handguns enhance the shooters ability to identify targets, confirm hits on target, and move on to the next engagement, by keeping the field of view uncluttered and as open as possible. The thinner front sight post obscures less of the target and sighting area, and improves a shooter's view of the field of engagement. XD HR Night sights encase the tritium-phosphor lamps in a protective aluminum cylinder so avoid damage from recoil or harsh cleaning solvents. Silicone rubber cushion for additional recoil protection Sapphire jewel window protects the lamps and evenly distributes light U-notch rear sight design The Mfg: Trijicon