Convert your standard mil spec AR 15, M4, M16 lower assembly to use 9mm and .40 S&W Glock Magazines! The Mag-AD series adapters install in seconds. Boasting a last round hold open feature making them a breakthrough product and a must-have for law enforcement and civilian gun enthusiasts alike.

The Stern Mag-AD9 series adapters are made of aircraft grade aluminum, lightweight with ergonomic design.

Note: These adapters require the use of a 9mm or 40S&W barrel, "depending on chosen caliber" and a Glock cut bolt.

Looking for a complete conversion kit? We have you covered.

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Already have a Colt Style bolt and want to use our system? We have you covered.

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Don't Have a bolt, want one? We have you covered.

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Don't Have a barrel, want one? We have you covered.

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Technical Information:

⦁ Made in the U.S.A.

⦁ Constructed from 6061 T6 aircraft grade aluminum.

⦁ 4140 NiB coated feed ramp.

⦁ Hard coat anodized type 3.

⦁ Sturdy Construction.

⦁ Ergonomic mag release.

⦁ Works with all generations of Glock magazines.

⦁ Works with any mil spec ar15 lower receiver.

⦁ All gun components besides the Bolt and Barrel remain stock


Please visit the following link before purchasing to ensure compatibility with your setup.


https://getstern.com/pages/mag-ad9compatibility