Smith & Wesson M&P Shield in 45 ACP

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Both Hyve and NDZ make +1 extensions. NDZ advertises a +2, but then clarify that it's a +2 if you start with a 6rd mag, and only +1 if you're replacing the OEM 7rd extended plate mag. Both the Shield45 6rd and 7rd mags have the same metal body. Only difference is the base plate.

So to be clear, both the Hyve and the NDZ base plates will make your .45 Shield mag an 8 rounder. And either one might require a stiffer spring, available from Wolff or NDZ.
 
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