Magpul | Gen 3 40-rd PMAG, AR15 .223 / 5.56mm

This is an AR-15 Gen M3 PMAG 40-round extended magazine in 5.56mm/.223 Rem.

With impact-resistant polymer construction, USGI-spec stainless steel internal springs, and Magpul’s constant curve internal geometry, these Gen M3 magazines are the perfect upgrade to any AR-15 arsenal.

Magpul’s Gen M3 PMAG magazines combine the combat-ready reliability of previous PMAGs with additional features like a paint pen dot matrix for easy labeling, redesigned bolt catch, over-insertion stop and aggressive grip texturing for superior performance.

Other new features include the pop-off impact/dust cover, flared floorplates and slimmer design for easier handling and storage in tight magazine pouches.

And thanks to their upgraded internal & external geometry, these Gen M3 PMAGs can also be used with a wide variety of non Colt-spec platforms ranging from the M27 IAR, British SA-80, and FN SCAR MK16/16s to the HK 416 and MR556A1.

Grab a few 40-round PMAGs to complete Your AR arsenal and double down on firepower today!

Magpul magazines are proudly made in the U.S.A.

In stock
Low Stock: Only 3 Remaining

NOTE THIS IS A RESTRICTED & REGULATED PRODUCT.     Some US States and countries / territories  outside the USA do not allow shipment of this product.   Note that USA means the 50 United States,  not APO / US Territories.     If you have a restricted item in your shopping cart and you cannot check out , please remove it. Magazines : 

  • California: 10 round limit
  • Colorado: 15 round limit
  • Connecticut: 10 round limit
  • District of Columbia: 10 round limit
  • Hawaii: 10 round limit (Pistol magazines only).
  • Illinois (Cook County): 10 round limit
  • Maryland: 10 round limit
  • Massachusetts: 10 round limit (unless customer supplies a copy of a license to possess high capacity magazines. Phone-in orders only)
  • New Jersey: 10 round limit
  • New York: 10 round limit
  • Oregon: 10 round limit
  • Vermont: 10 round limit (rifle) and 15 round limit (pistol)
  • Washington: 10 round limit


Firearm Parts & Shooting Accessories Outside of USA: 

  • Firearm parts not shipped outside USA (triggers, stocks, barrels, bolts, receivers)
  • Moon clips, speed loaders not shipped outside USA

Bullets, Brass,  & Other Components:

  • Live ammunition not delivered to California, Hawaii, Connecticut, Maryland, Massachusetts,  New Jersey, New York, Vermont, Washington DC, Alaska, Washington or any non-50-state US Territory / APO

    WARNING: This product can expose you to chemicals including lead, which are known to the State of California to cause cancer and reproductive harm. For more information, go to

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