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40 Round AR 15 PMAG: Magpul M3 .223 / 5.56 NATO – MAG233

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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

Specifications:

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

Products available on this page:



Have Questions About this Product?


The AT3 Tactical store has a 90 day no-hassle return policy for products in good condition. You can view the full details of our return policy here.

If you encounter an issue or defect with a product after 90 days of your purchase, you can refer to the manufacturer for a warranty claim. Their policies are below.

Magpul Warranty Information

If you ever experience an issue with a Magpul product at any time, regardless of where it was purchased, please contact us directly and we’ll do everything reasonable to help you.

To make a return, please take the following steps:

  • BEFORE returning any products, please contact us first to receive an RMA number (Return Merchandise Authorization) and prominently write it on the outside of the package. Packages will not be accepted without an RMA.
  • Include a note with your name, shipping address, phone number and email, RMA number, and reason for the return (including, if applicable, information about the firearm, ammunition, and usage environment for defective returns). Do not send ammunition.
  • Wrap the item with quality padding and place it in the original packaging or in an appropriate box for shipping.
  • A UPS shipping label will be provided in your shipment. If using the original packaging, remove or cover the original shipping label. Tape the preprinted return shipping label to the outside of the box. Drop package at an official or authorized UPS drop-off location.
  • All refunds will be applied to the credit card used for the original purchase. You should allow one to two billing cycles for the refund to appear on your statement.

Disclaimer: Manufacturer’s warranty is subject to change without prior notice.

Customer Reviews

Based on 23 reviews
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J
Johnnie J
Good Magazine

Love the magazine's very good quality.

Thanks for sharing your feedback! We're glad you're satisfied with your purchase. Cheers!

A
Alex C
Great magazine

Great mag, fits well and comes with dust cover, came in two days

R
Robin Ekler
Perfect

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!

J
James Willson

Works great 👍, thanks

Thanks for the feedback! We're glad you're enjoying the mags.

L
Lord Morales
Excellent product for the price

No hassle buying like you get from other stores. Worth it.

Thanks for sharing your feedback! We're glad you're satisfied with your purchase.