HK USP45 & Mark 23 +5 Magazine Extension

$49.95

HK USP45, Mark 23 magazine extension +5 adds five additional rounds to the full size HK USP45 & Mark 23 12 round magazine. Super easy to install, simply add the mag extension to your existing mag body and follower. An easy 2 min swap. No gunsmithing needed. Made 100% in the USA out of aircraft grade hard coat anodized aluminum & steel hardware. Ultra low profile, & rock solid. This offering is simply the finest +5 mag extension for your HK USP .45 & Mark 23 firearm available. With the addition of the +5 mag extension the round count in the magazine will increase from a 12 round magazine to a full 17 rounds. Ideal for competitive shooters, concealed carry or for everyday use while at the range.

Fits the USP 45 & Mark 23 .45 12 round magazines:

  • HK USP 45
  • HK USP 45 Tactical
  • HK USP 45 Expert
  • HK USP 45 Elite
  • Mark 23
  • Does not fit the HK45 or HK45 Tactical (although we do offer a +3 for the HK45 model)
  • Will not fit or work with the 10 round USP45 magazines
  • Section: Pistol Magazines
  • Type: Magazine Accessories
  • Sub-Type: Extension
  • Magazine Capacity: +5
  • Caliber: 45 ACP

In stock

SKU: HKP-18347

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What others are saying

  1. Question

    Tony Parsons

    Will this work on the 8 round mags for my HK USP compact .45 ?

    (0) (0)

    Something wrong with this post? Thanks for letting us know. If you can point us in the right direction...

    • HK Parts

      HK Parts

      This extension will not work on your USP Compact .45 magazines. We do have a +4 extensions for the USP Compact .45. The SKU is: HKP-18654.

      (0) (0)

      Something wrong with this post? Thanks for letting us know. If you can point us in the right direction...

    • William Darlington

      Is this US made or HK OEM?

      (0) (0)

      Something wrong with this post? Thanks for letting us know. If you can point us in the right direction...

    • HK Parts

      HK Parts

      This is an HK Parts Product.

      (0) (0)

      Something wrong with this post? Thanks for letting us know. If you can point us in the right direction...

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