This is a genuine HK USP Compact factory replacement barrel. It is designed to be used in conjunction with the HK USP compact that is chambered in .45 ACP. The barrel is threaded, and features a tough black finish.
Specifications and Features:
Heckler & Koch USP Compact Replacement Barrel 203106
4.46" Threaded Barrel
16 x 1mm LH Thread Pitch
Thread protector not included
HK USP Compact's chambered in .45 ACP