Matador Arms – Mag-X


In stock

Matador Arms – Mag-X Product Details

If you want to build the most unique AR15 style firearm, JSD Supply has you covered. We offer the Montgo 9 from our friends at Matador Arms. The Montgo 9 is a bufferless AR 15 style upper in 9mm. You can utilize your standard mil spec AR15 lower receiver with a magazine conversion insert to use the abundance of Glock magazines you have in your safe.

Available for G17/G19
The Mag-X allows you to use your pistol magazines in any AR-15 milspec lower – the ultimate PCC-pistol combination for Glock mags and AR15.
Fits any standard AR-15 lower receiver.
No modifications required to your lower or magazine.
Installs in seconds.
Built-in magazine release.
Locks into place with the standard AR-15 catch.
Lightweight aircraft-grade aluminum construction; anodized finish.
Steel ejector and magazine catch.
*Only compatible with mil-spec AR-15 lower receivers, combined with a 9mm upper with a Glock-cut bolt.
*No last round bolt hold open.
*Hand-fitting may be required with FM-9 uppers.
*The MagX will not work with the CMMG Radial Delayed Blowback.
  • Magazine Conversion Insert

Not included:

  • Lower Receiver
  • Upper Receiver
  • Magazine

With this Matador Arms Mag X, you can convert your standard Mil Spec AR-15 lower to run 9mm. The Montgo 9, you can complete your own AR15 PCC.  This bundle ships directly to your door.  Please know and understand your local laws for finishing and owning an AR-15 or any variant.




Buy From the Best Today

Whether you need a single part to complete your build, or an entire AR-15, you’ll get the best when you shop with JSD Supply.  Everything in our inventory has been tested by our team before we bring it on as a sellable product.  We have been the premier DIY firearm solution since 2013.

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