The Stern Defense magazine adapter (MPN MAGADMP45) lets a .45 ACP AR-pattern lower run Smith & Wesson M&P magazines.

Key Specifications

• Chambered/sized for .45 ACP
• Adapts an AR-pattern lower to run M&P magazines
• Product type: Magazine Adapter

Frequently Asked Questions

What magazines does this adapter run?
Smith & Wesson M&P .45 ACP magazines.

What caliber is this adapter built for?
.45 ACP.

Buy the Stern Defense .45 ACP Mag Adapter

Run M&P .45 ACP magazines in your AR-pattern pistol-caliber build with this adapter from Stern Defense. Ships fast from a Lubbock, TX gun shop in our AR magazines lineup.