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

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Customer Reviews

Just as pictured.
Review by Raymound E.
Verified Buyer
I purchased four clips and they all function.
Good Website
Review by Cedrie C.
Verified Buyer
Delighted with this purchase.
Great for me
Review by Bartt O.
Verified Buyer
Leading clips for the buck shipped by a terrific company. Thank you KEEPSHOOTING!
Magpul gen 3 30 rd mags
Review by Salvador O.
Verified Buyer
Customer service is outstanding and delivery was fast. Best price!!! No reason to shop around.
Very Happy
Review by Monty M.
Verified Buyer
I purchased three mags and they all work perfect.
Very Happy
Review by Mcarthur F.
Verified Buyer
Would Recommend this magazine
Excellent Clip
Review by Samnang W.
Verified Buyer
Fits in my AR15 using HP ammo.
Great Company
Review by Tyrae M.
Verified Buyer
I ordered three mags and they all work.
Review by Campbell L.
Verified Buyer
Received in two days after ordering. Will be back to shop at keepshooting.
Great product
Review by Alfredo O.
Verified Buyer
Fast shipping and fit like a glove!! Not a bad price either.
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