ArmaLaser Stingray RED LASER Sight with GG&G Rail Adapter for HK H&K USP Pistols | Laser Sight Pro
GG&G H&K USP Picatinny Rail Flashlight Mount HKUSP-MOUNT
H&K USP Compact Tactical - An HK USP 45 CT with barrel thread protecter, GG&G rail adapter with a 2nd Generation Viridian X5L green laser sight and tactical light. | Facebook
USP9C with GG&G rail and TLR-7A : r/USPmasterrace
Light-mounting help for HK USP - AR15.COM
WTS WA - HK USP Tactical 45 LE model (3 mags and night sights) brand new | Northwest Firearms
GG&G Slim Line HK USP Adapter for Surefire X200 & Streamlight M3/M6