Heckler and Koch USP 45

Heckler and Koch Ambidextrous Control Lever Kit for USP 9mm/40 SW/45 ACP

Heckler & Koch HK THREADED BARREL USPC 45 ACP MPN 203106

HK USP Tactical Thread Protector 45 ACP

HK HK USP Compact Threaded Barrel 45 ACP 4.46" Blue

HK HK MK23, USP Tactical 45 Replacement O-Ring

HK HK USP Tactical Threaded Barrel 45 ACP 5.09" Blue