The HK USP is one of the most proven and trusted service pistols ever produced — a robust, reliable platform that has served military and law enforcement agencies around the world for decades. The Trijicon Bright - Tough 3-Dot Tritium Sights HK06 gives HK USP owners the self-luminous tritium night sight upgrade that matches the quality and reputation of this legendary HK platform, delivering a clear three-dot sight picture in complete darkness without any batteries or electronics required. The HK06 is designed specifically for the H& K USP sight configuration - a purpose-built fit that installs correctly and delivers proper three-dot alignment on this specific platform. Every Trijicon Bright and Tough sight set is engineered to the exact dimensions of the handgun it was made for, ensuring correct installation and the full night sight performance advantage from the first round through the last. The HK06 replaces the factory sights cleanly with a direct-fit tritium solution that requires no modification to the slide. The Trijicon Tactical Iron Sights HK06 three-dot tritium system increases night-fire shooting accuracy by up to five times over conventional sights at the same instinctive shooting speed - without batteries, switches, or electronics of any kind. The self-luminous tritium-phosphor lamps glow continuously through passive tritium decay — always on, always visible, and always providing the three-dot aiming reference that accurate defensive and duty shooting in darkness demands. Green lamps are warranted for 12 years from the date of manufacture. The Pistol Sight HK06 metal body housing and silicone rubber cushioning handle the recoil and hard daily use that HK USP duty pistols accumulate through regular training, duty carry, and demanding operational use. Each lamp is capped with a sapphire jewel to ensure even light distribution and protect against solvent exposure. Aluminum cylinders provide structural protection throughout. Trijicon H& K USP 3 Dot Set HK06 600670