3-Pack – Magpul PMAG M3 30 Round Window – .223 / 5.56 NATO – MAG556 for AR 15

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Buy In Bulk And Save! This Pack Includes Three (3) M3 30-Round Window Pmags

The Magpul PMAG M3 Window is a next-generation 30-round 5.56×45 NATO (.223 Remington) polymer magazine for AR15/M4 compatible weapons that features transparent windows to allow rapid visual identification of the approximate number of rounds remaining.

Along with expanded feature set and compatibility, the PMAG M3 Window incorporates new material technology and manufacturing processes for enhanced strength, durability, and reliability to exceed rigorous military performance specifications.

Magpul PMAG M3 30 Round Window - .223 / 5.56 NATO - MAG556

Modified Internal And External Geometry

The Magpul PMAG M3 Window has modified internal and external geometry that is applicable to 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. It has 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.

Similar to the MOE PMAG, the PMAG M3 30-Round Window features a long-life stainless steel spring, four-way anti-tilt follower and constant-curve internal geometry for reliable feeding, and simple tool-less disassembly to ease cleaning.

Magpul PMAG M3 30 Round Window - .223 / 5.56 NATO - MAG556

Low Profile Ribs And New Aggressive Front And Rear Texture

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. The low profile ribs and new aggressive front and rear texture give positive control 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.

Magpul PMAG M3 30 Round Window - .223 / 5.56 NATO - MAG556

Dual-side Transparent Windows

Featuring durable dual-side transparent windows allow for quick determination of the approximate number of rounds remaining in the magazine. Utilizing a high visibility indicator coil on the spring and numerical markers on the magazine body, the MagLevel system provides positive verification without affecting the durability or reliability of the magazine.


  • Next-generation impact and crush resistant polymer construction
  • Modified dimensions allow for wider compatibility with non-Colt-spec’ STANAG 4179′ platforms
  • Constant-curve internal geometry for smooth feeding
  • Anti-tilt, self-lubricating follower for increased reliability
  • Long-life USGI-spec stainless steel spring, black-oxide coated (MIL-DTL-13924D
  • Anti-glare translucent MagLevel windows on both sides of the body along with a painted indicator on the spring allow for easy determination of rounds remaining
  • 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
  • Made in the U.S.A.


  • Each Pack includes three(3) pieces of Magpul PMAG M3 30 Round Window
  • Caliber: 5.56 x 45
  • Capacity: 30

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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 29 reviews
Hector Jimenez

3-Pack - Magpul PMAG M3 30 Round Window - .223 / 5.56 NATO - MAG556 for AR 15

Thank you for taking the time to leave a review for our 3-Pack of Magpul PMAG M3 30 Round Window magazines. We are glad to hear that you are satisfied with your purchase. Our team works hard to provide high-quality products for our customers and we are happy to know that you are enjoying them.

Jacob Dekenipp
haven’t received yet

it’s been weeks and have not received them yet.

Hi there, we apologize for any inconvenience you may have experienced with your order. Please reach out to our customer service team so we can look into this further and provide you with an update on your shipment. Thank you for your patience.

michael pritchard

I did not receive what I ordered. You gave me 300 BLK, you said that you are all out of stock and waiting for a new shipment to arrive, then you will send me what I original order, still waiting.

So sorry to hear about the issue, Michael. I sent you an email to get this resolved right away.

Luis Acevedo
Nice addition

It’s very nice to be able to see ammo at a glance

Vincent Hernandez
Great mags

Great product and great timing on the delivery!

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