HKUSP, Mark 23 Magazine Extension Kit – .45 – +7

HKP HK USP .45/MK23 – Magazine Extension Kit +7

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

Includes:

• +7 magazine extension
• Extra power enhanced spring

Features:

• Updated and improved design
• Easy 2 minute swap
• Made in the USA

Compatible With:

• HK USP .45
• Mark 23

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).