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40 Round PMAG: Magpul M3 .223 / 5.56 NATO – MAG233

40 Round PMAG: Magpul M3 .223 / 5.56 NATO – MAG233


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We have a 90-day no-hassle return policy. We pay return shipping.

If you need to request a return, contact us at support@at3tactical.com and we will send you a return label

After 90 days, defective items will still be covered under the manufacturer’s warranty, where applicable.

Please refer to the product listing for warranty details. If you have specific warranty questions, contact us at support@at3tactical.com. We may direct you to pursue your warranty claim directly with the manufacturer.

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If you’re dissatisfied with your purchase, in any way, please contact us at support@at3tactical.com – we will do our best to make it right.

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Shipping cost is $7.99 for orders under $50. We ship with UPS or USPS, depending on the item.

Most orders received by 1pm CST ship the same day

You will receive an email with tracking information at the time of shipment. To expedite shipping, we may ship your order from multiple warehouses. Orders placed on weekends, holidays, or after 1pm will ship the following business day.

A Tough and Reliable 40-Round Magazine for Long-term Use!

The 40 Round PMAG Magpul M3 incorporates a new material technology for enhanced strength and reliability on military performance specifications. It features a long-life USGI-SPEC stainless steel spring, a four-way anti-tilt follower and a constant-curve internal geometry for reliable round feeding.

Designed with pop-off Impact/Dust Cover that can optionally be used to minimize debris intrusion and protect the cartridge against potential damage during storage and transit.  It also features a new, easy to disassemble flared floorplate that aids extraction and handling of the magazine while providing improved drop protection.

40 Round PMAG: Magpul M3 .223 / 5.56 NATO – MAG233

With Slimmer Design For Better Compatibility

The 40 Round PMAG Magpul M3 is manufactured slimmer for better compatibility with tight double and triple magazine pouches. It has a redesigned bolt catch notch in the rear of the magazine that provides increased bolt catch clearance.

Low profile ribs and new aggressive front and rear texture give positive control in all environments. 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.

Designed with modified internal and external geometry, it 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.

Reliable and Durable Construction

  • Next-generation impact and crush resistant polymer construction
  • Long-life stainless steel spring
  • Ribbed gripping surface and new aggressive front and rear texture for positive magazine handling
  • Modified dimensions allow for wider compatibility with non-Colt-spec platforms

Increase Reliability

  • Constant-curve internal geometry for smooth feeding
  • Anti-tilt, self-lubricating follower for increased reliability
  • Over-travel insertion stop on the spine
  • Ribbed gripping surface and new aggressive front and rear texture for positive magazine handling
  • Paint pen dot matrix panels on the bottom of the body to allow for identification marking
  • Flared floorplate aids magazine handling and disassembly yet is slim enough for use with many double and triple pouches
  • Pop-off Impact/Dust Cover to minimize debris intrusion and for additional protection in storage and transit


  • Caliber: .223 / 5.56 NATO
  • Platform: AR15, M4, M16
  • Capacity: 40
  • Made in the USA

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Customer Reviews

Based on 5 reviews

Dont get any better. Most likely good investment as well

Thanks for sharing your feedback, Robin. We're glad you're satisfied with your purchase. Cheers!
Great company to do bussinesies with !!!

Good products Good prices Good service says it all !!!

Thanks for sharing your experience, Alvin. We work hard to meet expectations like yours, we're glad we hit the mark for you. Cheers!
Great quality

Love it!! the quality is amazing fast shipping

Thanks for the review, Kristina. We're glad you're satisfied with your purchase. - AB

Great place for your AR needs. Great service..

Thank you for the feedback Dean! We appreciate it
street soldier

Great service