Stern Defense Mag-AD .45 ACP AR-15 Magazine Adapter

Expand Your AR-15's Versatility

The Stern Defense Mag-AD .45 ACP Adapter transforms your standard mil-spec AR-15, M4, or M16 lower receiver into a capable .45 ACP platform. This innovative adapter allows you to use readily available Smith & Wesson M&P .45 ACP magazines, giving you access to affordable, common ammunition and magazines.

Key Features

• Quick Installation: Installs in seconds without gunsmithing or permanent modifications
• M&P Magazine Compatibility: Works with standard Smith & Wesson M&P .45 ACP magazines
• Last Round Hold-Open: Innovative feature that locks the bolt back on the final round, improving reliability and shooter awareness
• Aluminum Construction: Durable, lightweight design maintains the AR platform's handling characteristics
• Mil-Spec Compatible: Works with standard AR-15 lower receivers

Why Choose This Adapter?

If you already own an AR-15 platform rifle, the Mag-AD adapter offers an economical way to add .45 ACP capability without purchasing an entirely new firearm. The .45 ACP cartridge remains popular for defensive and target shooting applications, and this adapter opens up a world of ammunition and magazine options.

The last-round hold-open feature is particularly valuable for shooters who appreciate knowing when their magazine is empty, enhancing both safety and tactical awareness on the range or in the field.