Streamlight TLR-1/TLR-2 H&K USP Compact Model Rail Adapter - 69091 from SWPS.com
GG&G H&K USP Picatinny Rail Flashlight Mount HKUSP-MOUNT
USP Rail Adapter by PrintedFirearm - Thingiverse
Element H&K USP .45 Compact Pistol Under Rail Adapter Mount for $8.39 | TacticalGearTrade.com
Streamlight H&K USP Full Size Adapter for TLR Gun Mounted Flashlight | 32% Off 4.3 Star Rating w/ Free Shipping
H&K USP Rail Adapter - Compact
SOLD - HK USP 9mm Tactical | 1911 Firearm Addicts
GG&G Picatinny Rail Light and Laser Adapter for HK USP Compact - Wise Tactical
HK Picatinny Rail Flashlight Mounts| HK USP Flashlight Mounts | GG&G Tactical Accessories
Amazon.com : Ultimate Arms Gear Heckler & Koch HK USP Compact Pistol Handgun Mount Weaver Picatinny Rail Adapter for Scope, Sights, Lasers, Lights & Accessories : Sports & Outdoors
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
Cook's Gun Molds - for HK USP Tactical 40 w/Rail Adapter (Natural) | HolsterSmith.com
H&K USP Compact 9mm with Matchweight Rail Compensator and Surefire X300U-B. : r/GunPorn
GG&G HK USP Flashlight Picatinny Adapter Aluminum Matte