Converts the full size HK P30 9mm or .40S&W magazines to fit the HK USP Compact pistol. Increases the pistol's capacity to 15RD's in 9mm and 13RD's in .40S&W. No tools required for assembly. Slides over factory magazine and locks firmly against floorplate to fill in gap.
Product arrived quickly and as advertised. Works as intended. It doesn't get a "5 star" be cause the fit isn't tight. To keep them in place, you'll need to pick an adhesive.
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