This compensator fits the HK USP 45 Compact of all barrel lengths. The compensator has a fully open top to accommodate all barrel lengths, due to the fact that the barrel pitches when it is fired. From the standard full size (which achieves the most recoil reduction), to the tactical barrel (which achieves slightly less recoil reduction).
Comp Weight™ - HK USP 45 & USP 45 Tactical Compensator
Heckler and Koch CONSIGNED HK USP45 V1 45ACP USP COMPACT
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Match Weight - Compensator - Fits Heckler & Koch - HK USP Compact
My daily carry/dream pistol, an absolute beauty: HK45T with Match
MATCH WEIGHT - Compensator - Fits Heckler & Koch - HK USP Compact
Match Weight - Compensator - Fits Heckler & Koch - HK USP Compact
HK USP COMPACT (HECKLER & KOCH) ALUMINUM MATCH WEIGHT COMPENSATOR
USP Series (HECKLER & KOCH) 9mm / .45mm / .40mm STEEL COMPENSATOR
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Comp Weight™ - HK USP 45 & USP 45 Tactical Compensator
MATCH WEIGHT - Compensators $350.00 - PicClick
HK USP COMPACT (HECKLER & KOCH) ALUMINUM MATCH WEIGHT COMPENSATOR