Meprolight Tru-Dot Green Tritium Sight Set Fits HK USP, Adjustable #215163101. Upgrade your HK USP with Meprolight’s Tru-Dot Sight Set featuring green tritium for 24/7 visibility and an adjustable rear sight for precise windage and elevation alignment. Trusted by law enforcement for reliability and performance. Self-illuminated green tritium dots for day/night visibility. Adjustable rear sight for windage and elevation. Designed for rapid, instinctive aiming. Durable steel construction with black finish. Maintains consistent sight picture across lighting conditions. No batteries required-always on. ISO 9001:2008 certified and NATO/US Mil-Spec compliant. Firearm Fit: HK USP Full Size / Compact / Tactical / Expert. Rear Sight: Green Tritium, Adjustable. Front Sight: Green Tritium, Fixed. Meprolight Tru-Dot Adjustable Rear Sight. Meprolight Tru-Dot Fixed Front Sight.