Meprolight Night Sights Green Front/Rear for HK USP f/s Tactical & Expert Adjustable 21516. Meprolight crafted these Tritium Pistol Sights with reliable tritium that brings a bright aiming point at any time of day without requiring batteries or an external power source to do so. Trusted by military and law enforcement these Meprolight HK Tritium Night Sights are built tough to withstand the harsh recoil from your weapon. These require absolutely no maintenance after installation and can be mounted directly onto your HK pistol without modifications. Go with a trusted name in tritium sights and equip your handgun with these Meprolight HK Illuminated Night Sights today. Specifications for Meprolight Night Sights for HK Pistols and Handguns: Manufacturer: Meprolight Gun Make: Heckler & Koch Color: Black Fabric/Material: Metal / Tritium Gun Type: Pistol Illumination Type: Tritium Features of Meprolight Tru-Dot Tritium H K Night Sight MR-AP-HKPISTOL: Self Illuminated light source - No batteries or switches always ready when you need them. Operates under all weather conditions. The brightest night sights available today. Totally integrated day and night sighting. Maintenance free. Can be mounted directly with no weapon modifications. Over 4500000 systems in use worldwide. Tests by marksmen show an increase of over 85percent in hit capability. Strongest worldwide comprehensive warranty in the industry. Withstands recoil. Resists solvents and harsh field conditions. Package Contents: Meprolight Night Sights for HK Pistols and Handguns Meprolight 215163101: Night Sights Green Front/Rear for HK USP f/s Tactical & Expert Adjustable 21516