HKP HK USP45, Mark 23 +5 Magazine Extension - Red

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Firearm Model:
Firearm Model:
HK Mark 23
.45 ACP
Magazine Capacity:
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Magazine Extension - +5 - Red - HK USP45 & Mark 23

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

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