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Questions & Answers
So I would have to get an ar9 upper ? Expert Answer

Yes, the Matador Arms Mag-X SIG Sauer P320 Conversion Caliber is compatible with Mil-Spec AR15 lowers and 9mm upper with a Glock-cut bolt.

by Hunter, Gear Expert, June 9, 2023
Which S&W magazines can be used with this adapter? Expert Answer

The Matador Arms Mag-X - Magwell Adapter for AR-15 Mil-Spec Lowers will work with standard S&W M&P magazines.

by Ethan, Gear Expert, January 26, 2022
Customer Reviews
Helpful Positive Review
Works great by Whiskey, August 9, 2022
Works as intended mine is running fine with glock mags. I've seen people complain about issues. I'm guessing mags where out of spec or the company made adjustments. Seems to work fine with stock and magpuls
1/1 found this helpful
Helpful Positive Review
M&P version works great by acw18, Verified Owner, December 16, 2021
I may be an outlier, but the M&P version of this adapter has worked perfectly for me with a couple of mil-spec lowers. I've had lots of trouble with the Stern Defense version -- not feeding the last round and not working at all with non-S&W mags. T...
Read More...
1/1 found this helpful
Helpful Negative Review
Just Does Not Work by Shooter McCGavin, November 30, 2021
Between two of these adapters and several brands of Mil-Spec lowers with Glock-Cut BCG's we were not able to make this work properly. As other reviews stated, there are feed ramp and ejector clearance issues. Those issues are solvable with time and...
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12/13 found this helpful
Most Recent Reviews
P320 mag converter by Pita, Verified Owner, December 22, 2024
Bought so the wife can shoot 2 gun with her 320 and an ar pcc without different mags. Seems to work fine.
Most Recent Reviews
To whom this may concern, here is my review; I've owned both Matador Arms Montigo (Junk) and the MAT-9 (Junk) and I have yet to make it through a full Magazine. After making 4 different Extractors for the colt Mags I purchased this "MagX P320 AR Adap...
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Most Recent Reviews
too many malfunctions by RVO, Verified Owner, August 24, 2024
Using the Mat-9 upper with mil-spec lower Used 3 different Glock mags: OEM—FTF, round after round, it just can’t seem chamber the the rounds. ETS Gen 2–worked the best out of the 3 but seldom has FTE and double feed malfunctions. Amend 2–doesn’t ...
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1/1 found this helpful
Read All 10 Reviews
Color:
Black
Finish:
Anodized
Gun Model:
AR-15, Glock 17, Glock 19
Caliber:
9mm Luger
Magazine Capacity:
0 Round
Magazine Type:
Pistol
Condition:
New

Code: MDA-CNC-MGX-MAC138-0RD

MPN: MAC138

UPC: 603784000138

List: $149.99Save $12.00
$137.99

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Product Info for Matador Arms Mag-X Conversion Caliber

The Mag-X allows you to use your pistol magazines in any AR-15 milspec lower - the ultimate PCC-pistol combination for Glock, Sig-P320, CZ 75, M&P, and CZ P-09 and P-10 owners!image

Specifications for Matador Arms Mag-X Conversion Caliber:

Manufacturer: Matador Arms
Color: Black
Finish: Anodized
Fabric/Material: Aircraft-Grade Aluminum
Gun Make: Glock
Gun Model: Glock 17, Glock 19, AR-15
Caliber: 9mm Luger
Magazine Capacity: 0 Round
Magazine Type: Pistol
Magazine Included: No
Condition: New

Features of Matador Arms Mag-X Conversion Caliber

  • No modifications required to your lower or magazine.
  • Installs in seconds.
  • Built-in magazine release.
  • Only compatible with mil-spec AR-15 lower receivers, combined with a 9mm upper with a Glock-cut bolt.
  • Locks into place with the standard AR-15 catch.
  • Lightweight aircraft-grade aluminum construction; anodized finish.
  • Steel ejector and magazine catch.
  • 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.

Package Contents:

  • Matador Arms Mag-X Conversion Caliber

Matador Arms Mag-X Conversion Caliber Orderable Models

List of Orderable Models

  • Matador Arms Mag-X G17/G19 Conversion Caliber, Black, MAC138 , MPN: MAC138 , UPC: 603784000138 , Code: MDA-CNC-MGX-MAC138-0RD

Matador Arms Mag-X Conversion Caliber Unavailable & Discontinued Models

List of Unorderable Models

  • USED Matador Arms Mag-X SIG Sauer P320 Conversion Caliber, Black, MAC077, EDEMO2, Condition Parts Only/Salvage, Wrong Product , MPN: MAC077-EDEMO2 , Code: MDA-CNC-MGX-MAC077-0RD-EDEMO-WP-F
  • USED Matador Arms Mag-X G17/G19 Conversion Caliber, Black, MAC138, EDEMO3, Condition Fair, Installed/Mounted , MPN: MAC138-EDEMO3 , Code: MDA-CNC-MGX-MAC138-0RD-EDEMO-IN-D
  • USED Matador Arms Mag-X SIG Sauer P320 Conversion Caliber, Black, MAC077, EDEMO3, Used, Condition Fair , MPN: MAC077-EDEMO3 , Code: MDA-CNC-MGX-MAC077-0RD-EDEMO3
  • USED Matador Arms Mag-X SIG Sauer P320 Conversion Caliber, Black, MAC077, EDEMO1, Used, Condition Fair , MPN: MAC077-EDEMO1 , Code: MDA-CNC-MGX-MAC077-0RD-EDEMO1
  • USED Matador Arms Mag-X G17/G19 Conversion Caliber, Black, MAC138, EDEMO1, Used, Condition Fair , MPN: MAC138-EDEMO1 , Code: MDA-CNC-MGX-MAC138-0RD-EDEMO1
  • Matador Arms Mag-X M&P Conversion Caliber, Black, MAC121 , MPN: MAC121 , UPC: 603784000121 , Code: MDA-CNC-MGX-MAC121-0RD
  • Matador Arms Mag-X CZ-75 Conversion Caliber, Black, MAC114 , MPN: MAC114 , UPC: 603784000114 , Code: MDA-CNC-MGX-MAC114-0RD
  • USED Matador Arms Mag-X G17/G19 Conversion Caliber, Black, MAC138, EDEMO2, Used, Condition Fair , MPN: MAC138-EDEMO2 , Code: MDA-CNC-MGX-MAC138-0RD-EDEMO2
  • Matador Arms Mag-X CZ P-09/P-10 Conversion Caliber, Black, MAC145 , MPN: MAC145 , UPC: 603784000145 , Code: MDA-CNC-MGX-MAC145-0RD
  • Matador Arms Mag-X SIG Sauer P320 Conversion Caliber, Black, MAC077 , MPN: MAC077 , UPC: 603784000077 , Code: MDA-CNC-MGX-MAC077-0RD
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