Henning Group's Magazine Extension for Smith & Wesson M&P 9mm. This extension is made to make your magazine legal for USPSA 141.25mm gauge. For maximum capacity, add the follower kit.
Our latest design includes numbering dots, serrations for light side grab and a reinforced wall thickness.
We recommend adding the optional MBX Extreme follower and spring kit to increase capacity to 24 + 1. The spring is longer and designed to work with our extension.
Work with all magwells we have tried
MBX Aftermarket Follower Kits does NOT LOCK slide back on empty.
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Manufacturer:
Henning
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Shipping Weight:
0
lbs
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