Stern Defense SIG P320/S&W M&P9 Mag Adapter

By Nicholas C

Stern Defense magwell adapters are a great way to caliber convert a mil-spec AR-15 lower to shoot a pistol caliber. They started with a Glock magazine adapter. Check out my review of their MAG-AD9. They have also made adapters to use Beretta 92 magazines and even M&P 45 magazines. However, their latest design uses SIG […]

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Source:: The Firearm Blog