USP Magazines / Extensions

HK Parts and Heckler and Koch complete .45 ACP 17-round Magazine for HK Mark 23 and HK USP  Each mag comes fully assembled and ready for use. HK Parts takes an existing German HK 12 round magazine coupled with the +5 magazine extension and...

HKP 17 Round HK USP .45 ACP/Mark 23 Enhanced Magazine  Our 17 round magazine starts life as a factory HK 12 round magazine then gets a capacity bump with our +5 mag extension. Compatible With: HK USP .45 HK Mark 23

HKP HK Parts and Heckler and Koch Magazine Extension Complete 19 Round - HK Mark 23 and USP .45 Designed specifically for the Mark 23 and USP .45—perfect for those who want extra firepower at the range. Each magazine comes fully assembled and ready...

HKP HK Parts 15 Round .45 ACP Magazine for HK 45C and USPC COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. HK Parts +7 magazine extension boosts the HK45C...

HKP 25 Round HK USP 9mm Magazine HK Parts +10 magazine extension coupled with a 15 round magazine. Each unit is then fully assembled as a 25 round magazine. Ideal for competitive shooters, concealed carry or for everyday use while at the range...

HKP Complete 22 Round Magazine for USP9 Complete 22 round magazine for HK USP9 pistols. This magazine combines an HKP magazine extension with an original German Heckler and Koch magazine body to increase capacity to 22 rounds. Built for USP9 models and...