Magpul PMag 40-Round Magazine for AR-15

The Magpul PMAG40 is an extended capacity magazine for the AR-15 and any firearm designed to accept standard AR-15 magazines. Recognizing a need for an extended capacity magazine, Magpul did what they do best and developed an extended capacity magazine based on the original PMAG. With the dimensions and feeding geometry being identical to the PMAG, the PMAG-40 will provide the same level of performance and reliability that Magpul is known for.


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20+ Years In Business


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Ships from Pennsylvania


There are times when a standard capacity 30-round magazine will do and there are times when you'd like just a bit more magazine capacity. Now that Magpul has released the PMAG40 you can have an extra 10 rounds of 5.56 ammunition available before you need to change magazines. Far from being just an extra ten rounds however as the PMAG40 enjoys the same reliability and performance as the original PMAG-30.

Magpul Industries has been innovating in the development of firearms magazines since the very first PMAG was released. The brand new PMAG40 builds upon this history and commitment to customer satisfaction, equipment reliability, and performance. You can count on each and every time you load your PMAG40 that when you are at the gun range it will fit and feed all rounds from your AR-15 type firearm.

  • Magpul Produced Magazine
  • 40-Round Capacity
  • 5.56x45mm NATO / .223 Remington Caliber
  • Works in AR15, M16, M4, HK 416, FN SCAR 16, SA-80 and M27 Rifles
  • Generation M3 Magazine
  • Complete with Dust Cover
More Information
Overall Rating
Quick Delivery
Review by Mariano P.
Received in two days after buying. Will be back to shop at Keepshooting.
Overall Rating
Perfect for my use
Review by Elmo V.
Clips look great. Exactly what I needed.
Overall Rating
Great Price
Review by Garth Y.
I purchased four clips and they all work.
Overall Rating
Quick Shipping
Review by Eddrick M.
The mags are good. Would buy again.
Overall Rating
THANKS keepshooting
Review by Martrell B.
Received in three days after placing my order. Will be back to buy from Keepshooting again.
Overall Rating
Rapid Processing
Review by Eduardo M.
Price is excellent and shipping was speedy.
Overall Rating
Perfect Item
Review by Kali F.
Finest mags for the buck shipped by a terrific company. Thank you KS!
Overall Rating
Good Price
Review by Bryan O.
Clips look good. Exactly what I needed.
Overall Rating
Very Happy
Review by Lawton J.
Lowest price I could find that was online. Delivery was speedy with UPS.
Overall Rating
Review by Ebrima A.
Can't come close to beating the price!Couldn't have shipped them faster!!!Thanks!!!
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