Magpul® PMAG® 20 rnd GEN M3

(9 reviews)
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Magpul PMAG® 20 GEN M3

The next-generation PMAG® 20 GEN M3 is a 20-round 5.56x45 NATO (.223 Remington) polymer magazine for AR15/M4 compatible weapons. Along with expanded feature set and compatibility, the GEN M3 incorporates new material technology and manufacturing processes for enhanced strength, durability, and reliability to exceed rigorous military performance specifications.

Modified internal and external geometry also permits operation with a wide range of non Colt-spec platforms such as the HK® 416 and MR556A1, M27 IAR, British SA-80, FN® SCAR™ MK 16/16S, and others. A redesigned bolt catch notch in the rear of the magazine provides increased bolt catch clearance, while an over-travel stop on the spine helps ensure the magazine will not over-insert on compatible weapons.

The PMAG® 20 GEN M3 features a long-life USGI-spec stainless steel spring for commonality, four-way anti-tilt follower and constant-curve internal geometry for reliable feeding, and simple tool-less disassembly to ease cleaning. In addition, an included pop-off Impact/Dust Cover can optionally be used to minimize debris intrusion and protect against potential damage during storage and transit. Low profile ribs and new aggressive front and rear texture gives positive control of the GEN M3 in all environments, and a paint pen dot matrix has been added to the bottom panel of the body to allow easy marking by the end user for identification. The new, easy to disassemble flared floorplate aids extraction and handling of the magazine while providing improved drop protection, but is slightly slimmer than before for better compatibility with tight double and triple magazine pouches.

Made in U.S.A.


  • 5
    Boring pmag

    Posted by James on 1st May 2020

    Works just like any other pmag I’ve ever owned.

  • 5
    New customer

    Posted by Lonnie & Swedeen on 11th Mar 2018

    Good quality products, good pricing and quick service.

  • 5
    20 rd mags: Great Battle Belt Option

    Posted by Unknown on 25th Oct 2016

    Magpul's 20rd mag has been a fantastic sized mag for my battle belt setup. I run the esstac shorty KYWI's on an archangel belt and it has proven to be very solid. The 20 round mags are a viable option to prevent any interference with an IBA that may have side panels / armor that may normally rub against a 30 round mag. But, if you run your IBA correctly (up high) there shouldn't be too much interference either wa; I just like the 20 rd mags as an option. You can run a tall mag pouch and drop it low to accommodate a 30 rd magazine, however, this isn't nearly as comfortable or as easy to operate when compared to drawing a mag from a short mag holster. To each his own though. Thanks SKD.

  • 5
    PMAGs Just Work Always

    Posted by Mark Manninen on 17th Jan 2016

    Fit, work, right price, done.

  • 5
    Magpul PMAG 20

    Posted by Kevin Ingold on 1st Jan 2015

    Needed these for the MK12 mod 01 when shooting from the bench. What can I say, these magazines outlast anything else out there.

  • 5
    MAGPUL 20

    Posted by Michael on 1st Jan 2015

    Superior product. Incredibly easy and fast to load! Enough said.

  • 5
    Fast delivery!

    Posted by Corey on 19th Aug 2014

    Great price for a great product with FAST delivery! Will definately be making more purchases soon!

  • 5
    Magpul PMAG 20 GEN M3

    Posted by Del Corbett on 25th Jun 2014

    It's a 20 round pmag at a good price. It works, that is all.

  • 5
    Solid gear

    Posted by RedRyder21 on 13th Jan 2014

    It's a Pmag. It works, and works, and works some more!