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Magpul PMAG GEN M3 AR-10 .308/7.62x51 20 Round Magazine

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Magpul PMAG GEN M3 AR-10 7.62NATO 20 Round Magazine (10 Pack)
Magpul PMAG GEN M3 AR-10 .308/7.62x51 20 Round Magazine (10 Pack)
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This is the Magpul PMAG AR-10/SR-25 20-round magazine, chambered in .308 Winchester / 7.62×51 NATO. Compatible with AR-10, M110, SR-25 platforms.

The PMAG 20 LR/SR GEN M3 brings many of the M3 improvements to the standard SR25 20-round magazine.

The 7.62×51 NATO (.308 Winchester) PMAG 20 LR/SR GEN M3 is a lightweight, cost-effective, high-reliability magazine for SR25/M110 pattern rifles featuring true 20-round capacity, constant-curve body, and anti-tilt follower.

Designed specifically for military-issue MK11/M110 rifles and SAAMI-spec ammunition, the PMAG 20LR/SR 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.

Made in U.S.A.


  • 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

*NOTE: 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.


Black: 873750008509, FDE: 840815123095

Manufacturer Part #

Black: MAG291-BLK, FDE: MAG291-MCT



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Customer Reviews

Based on 114 reviews
Daron F.

Mags work and look great with my psa Sabre AR10.

Giles C.
The P Mag is a perfect design

Works perfectly, affordable, reliable, light and durable.

Value Added

Competitive prices, fair shipping rates, and quick shipping service. What's not to like? I'll be back.

Kevin B.
Excellent JTS AK-12 12 gauge shotgun 10 round magazines!

These are EXCELLENT magazines! No jams from the magazines so far in my JTS AK-12 shotgun. No matter how fast I pulled the trigger there were no jams with the high brass ammo I was using. This was my first purchase from the Mag Shack and they shipped it to me immediately! I was honestly surprised at haw fast I received my magazine order from the Mag Shack.

jeffrey c.
Excellent product

Exactly as advertised. The quality was what you'd expect from pmag. Perfect fit for anderse arms lower. Shipping arrived in 3 days. Will definitely place future orders.