Magpul M3 20 Rd Magazine – 308 Win/7.62NATO Caliber – Fits DPMS/SR25/LaRue OBR – MAG291

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Improved And Highly Reliable 20-Round Magazine

The Magpul M3 20 Rd Magazine is a lightweight high-reliability magazine for SR25/M110 pattern rifles. This magazine brings many of the M3 improvements to the 20-round 7.62 NATO/.308 Winchester SR-25 magazine form factor.

Designed specifically for military-issue MK11/M110 rifles and SAAMI-spec ammunition, the Magpul M3 20 Rd Magazine is less than half the weight of standard issue steel magazines and maintains a service life round count approximately equal to the rifle barrel itself.

Magpul M3 20 Rd Magazine - MAG291

Anti-glare Translucent MagLevel Windows

Magpul M3 20 Rd Magazine feature anti-glare translucent MagLevel windows on both sides of the body. It has a painted indicator on the spring that allows for easy determination of rounds inside the magazine. Designed with a ribbed gripping surface, the new aggressive front and rear texture promote positive magazine handling.

The Magpul M3 20 Rd Magazine also has flared floorplate yet slim enough for use with tight double and triple magazine pouches. The high-quality stainless steel spring inside is corrosion-resistant and the integrated follower is self-lubricating with an anti-tilt feature for increased reliability.

Magpul M3 20 Rd Magazine - MAG291


  • Optimized for use with SAAMI-spec 7.62×51/.308 Winchester ammunition
  • Additional commercial rifle compatibility includes the new Armalite AR-10A, Bushmaster .308 ORC, Colt LE901-16S, CORE Rifle Systems CORE30, DPMS LR308, JP Enterprises LRP-07, KAC SR25, LaRue OBR, Les Baer .308, LMT .308 MWS, LWRCI REPR, Mega Arms MATEN, POF P-308, Remington R-25, Ruger SR-762, S&W M&P10, SIG716, and others*
  • Next-generation impact and crush resistant polymer construction
  • Constant-curve internal geometry for smooth feeding
  • Anti-tilt, self-lubricating follower for increased reliability
  • High-quality stainless steel spring for corrosion resistance
  • 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 pouches
  • Available in Black or Coyote Tan
  • Made in the USA


  • Compatible with older model Bushmaster .308 ORC, Remington R-25, and DPMS LR308 rifles, but not optimized for bolt lock functionality with newer models based on the DPMS GII design.
  • NOT compatible with Armalite AR-10B, Springfield Armory M1A, Rock River Arms LAR8, FN SCAR 17S, PTR-91, HK417 or any other rifles that utilize M14, FN FAL, or HK 91/G3 patterned magazines.
  • To accommodate longer than SAAMI-spec match ammunition, this magazine may not drop free from all makes of lower receivers.

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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 6 reviews
Gregg Kimbell
Great item

Perfect magazine it was a little stiff at first use

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

Charles Bonta

Quality product at a fair price.

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

Kim Burris
Good mags

These are excellent magazines at an excellent price. If they are in stock and you have the means I highly recommend you get them. They work. What's not to love?

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

Martin Johnson
Magpul Magazines, 308 caliber

Fast Shipping, best pricing I could find, and the 10 & 20 round magazine performed perfectly. Worked in multiple rifles flawlessly.

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

Eric Nyman

Excellent. Fits well.

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