Stern Defense Mag-AD9 AR-15 to Glock Magazine Adapter

Stern Defense Mag-AD9 Magazine Adapter

Transform your mil-spec AR-15, M4, or M16 lower receiver to accept standard Glock 9mm and .40 S&W magazines with this innovative adapter system. Installation takes seconds—no gunsmithing required.

Key Features

• Last Round Hold Open: Bolt locks back on the final round, a critical feature for tactical operations and training
• Aircraft-Grade Construction: Machined from 6061 T6 aluminum with hard-coat Type 3 anodizing for durability
• Reliable Feed System: 4140 NiB-coated feed ramp ensures consistent performance
• Universal Compatibility: Works with all generations of Glock magazines and any mil-spec AR-15 lower receiver
• Ergonomic Design: Intuitive magazine release mechanism
• Minimal Parts Replacement: Only the bolt and barrel require changes; all other components remain stock

Why Choose the Mag-AD9

This adapter represents a genuine breakthrough for shooters who want the modularity of the AR platform combined with the magazine ecosystem of Glock pistols. Law enforcement agencies and civilian enthusiasts alike appreciate the cost savings of using common handgun magazines in a rifle platform, plus the training benefits of standardized ammunition across multiple firearms.

Made in the USA with uncompromising attention to detail.