HK USP45, Mark 23 +10 Magazine Extension

Magazine Extension - +10 - HK USP .45 & Mark 23

Easy to install. Simply add the mag extension to your existing mag body and follower. No gunsmithing needed.

Made 100% in the USA out of aircraft-grade hard coat anodized aluminum with steel hardware. Ultra low profile & rock solid. With the addition of the +10 mag extension, the round count in the magazine will increase from a 12 round magazine to a full 22 rounds. Ideal for competitive shooters, concealed carry, or range day mag dumps!

HKP highly recommends using a magazine loader when loading ammunition into our extended magazines due to increased spring tension versus factory.

Compatible With:

• HK USP 45
• HK USP 45 Tactical
• HK USP 45 Expert
• HK USP 45 Elite
• Mark 23
• Not compatible with: 10 round USP45 magazines

Please note: This listing is for the magazine extension ONLY. This is not a complete magazine.  The referenced magazine capacity is the total capacity once the extension has been added to the factory magazine (which is not included).