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Convert your standard mil spec AR 15, M4, M16 lower assembly to use 9mm and .40 S&W M&P and P320/P250 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-AD 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.

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 M&P magazines.
  • Works with P320 and P250 magazines
  • Works with any mil spec ar15 lower receiver.
  • All gun components besides the Bolt and Barrel remain stock.

Compatibility Questions Click here!

Specifications

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Stern Defense Mag Adapter M&P 9/40

Our Price:

$186.99
Stern Defense Mag Adapter M&P 9/40
$186.99
  • MSRP$186.99
  • SKUMAGSDADMP940P320
  • MPNMAG-ADMP940P320
  • UPC850001176217
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Total in stock: 1

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5004 State Highway 74 Cape Girardeau, MO 63701
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