Stern Defense Mag-AD9

Stern Defense Mag-AD 9mm / .40 S&W Glock Magazine Adapter.

The Mag-AD 9mm / .40 S&W Glock Magazine Adapter is Stern Defense’s flagship product, the one that put us on the map. Trusted by law enforcement and civilian gun enthusiasts alike, this adapter allows you to quickly convert your standard mil-spec AR-15, M4, or M16 lower assembly to accept Glock 9mm and .40 S&W magazines.

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