Magpul® PMAG® 20 AR/M4 GEN M3® Magazine 5/20 Round 5.56x45mm


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The next-generation PMAG 20 AR/M4 GEN M3 is a 5/20-round polymer magazine for AR180B compatible weapons chambered in 5.56×45 NATO / .223 Remington. Along with expanded feature set and compatibility, the GEN M3 incorporates new material technology and manufacturing processes for enhanced strength, durability, and reliability that exceed rigorous military performance specifications.

Similar to the MOE® PMAG, the GEN M3 features a long-life USGI-spec stainless steel spring for commonality, a four-way anti-tilt follower, constant-curve internal geometry for reliable feeding, and simple tool-less disassembly for easy cleaning.

The PMAG 20 GEN M3 also includes a redesigned bolt catch notch in the rear of the magazine that provides increased bolt catch clearance, while an over-travel stop on the spine helps ensure the magazine will not over-insert on compatible weapons. Low profile ribs and new, aggressive front and rear texture give 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 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. An included pop-off impact / dust cover can optionally be used to minimize debris intrusion and protect against potential damage to the top cartridge during storage and transit.

Made in the U.S.A.


  • Rugged Construction and Advanced Follower
    • Next-generation impact and crush resistant polymer construction
    • The anti-tilt, self-lubricating follower ensures a smooth feed and magazine reliability
    • Modified dimensions allow for wider compatibility with non Colt-spec platforms
  • Easy Identification and Advanced Floorplate
    • Utilize the paint pen dot matrix to easily identify magazines with different loadouts
    • Flared floorplate aids magazine handling and disassembly, and is slim enough for use with many double and triple pouches
  • Gen M3 DNA in a smaller Package
    • Compact 5/20 round magazine accomodates firing from a prone position
    • Next-generation impact and crush resistant polymer construction
    • Its ribbed gripping surface and aggressive front and rear texture provide positive magazine handling
    • Constant-curve internal geometry, over-travel insertion stop on the spine, and a long-life stainless steel spring ensure smooth feeding
    • Pop-off impact / dust cover to minimize debris intrusion and for ammunition protection in storage and transit


Caliber 5.56 x 45
Platform AR180B
Capacity 5
Compatibility Armalite-spec AR180B platforms, IWI Tavor, Mossberg MVP

Additional Information:

Item Number MAG560-BLK-5


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