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, and a Glock cut bolt. 

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.
• Compatible with all generations of Glock magazines.
• Works with any mil spec ar15 lower receiver.
• All gun components besides the Bolt and Barrel remain stock
• Weight 5.5oz

**The MAG-AD9 will not function properly on mag wells with irregular contours, "3D skulls, waves, and other non mil-spec contours." 

NOT recommended for non mil spec billet lowers. 

For the best experience, please use the MAG-AD9 with ar-15 and m16 mil-spec lower receivers.

DISCLAIMER: This product is not manufactured, authorized, endorsed, or warranted by GLOCK. GLOCK does not warrant or represent that this product is compatible with GLOCK pistols.