+4 Mag Base Pad for the M&P .40

We are proud to introduce the newest member of the Hyve Technologies Mag Extension family. The +4 for the S&W M&P .40. Like a couple of our other extensions, this +4  features our new snap in design, followed up with a set screw to add extra insurance that your mag will not to slide off the back off the extension. While giving you extra rounds! This extension comes with a +spring.

*ALL COLORS ARE PROPRIETARY AND NOT MEANT TO MATCH ANY  MANUFACTURER COLORS.*

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