Shipping Information:
We are experiencing a large increase in orders. Non-firearm orders are estimated to ship within 7 business days after the order is placed. Firearm orders will require more time. We apologize for any inconvenience. We are working to process and ship each order as quickly as possible.

If you would like to request a cancellation of your order, you may do so by visiting your Order History page, and selecting the order you would like to cancel. Due to the high demand and limited supply of certain items, we have temporarily suspended dealer sales in order to service as many of our own customers as possible.

Magpul PMAG 40 AR/M4 GEN M3 5.56mm 40-Round Magazine

  • Item Number: MAG233-BLK
  • /
  • View More Items by Magpul
  • /
  • Condition: NEW
Temporarily Out of Stock
    $29.99
  • Eligible for Flat Rate Shipping
    Ships free when purchased with a firearm
Share this
  • TROY 5.56mm 30-Round Battlemag for AR-15 Rifles

    Troy 5.56mm 30-Round Battlemag for AR-15 Rifles
    $10.99

  • MAGPUL PMAG GEN M2 5.56mm 30-Round Black Magazine

    Magpul PMAG GEN M2 5.56mm 30-Round Black Magazine
    $16.99

  • MAGPUL PMAG GEN M3 5.56mm 30-Round Black Magazine with Window

    Magpul PMAG GEN M3 5.56mm 30-Round Black Magazine with Window
    $19.99

  • MAGPUL PMAG GEN M2 5.56mm 30-Round Magazine with Window

    Magpul PMAG GEN M2 5.56mm 30-Round Magazine with Window
    $19.99

  • MAGPUL PMAG GEN M3 5.56mm 30-Round Coyote Tan Magazine

    Magpul PMAG GEN M3 5.56mm 30-Round Coyote Tan Magazine
    $19.99

  • MAGPUL PMAG 30AR/M4 Gen M3 5.56mm 30 Round Coyote Tan

    Magpul PMAG 30AR/M4 Gen M3 5.56mm 30 Round Coyote Tan
    $23.99

  • MAGPUL PMAG GEN M3 5.56mm 10-Round AR-15 Magazine

    Magpul PMAG GEN M3 5.56mm 10-Round AR-15 Magazine
    $19.99

  • MAGPUL PMAG GEN M3 5.56mm 20-Round Black Magazine

    Magpul PMAG GEN M3 5.56mm 20-Round Black Magazine
    $19.99

  • MAGPUL PMAG GEN M2 5.56mm 30-Round Black Magazine (Bulk Packaging)

    Magpul PMAG GEN M2 5.56mm 30-Round Black Magazine (Bulk Packaging)
    $16.99

  • AMEND2 AR15/M4 Mod.2 5.56mm/223 Rem. 30-Round Magazine (Trump 2020 Limited Edition)

    Amend2 AR15/M4 Mod.2 5.56mm/223 Rem. 30-Round Magazine (Trump 2020 Limited Edition)
    $29.99

  • ATI Schmeisser S60 223/5.56 60-Round AR-15 Magazine (Gen 2)

    American Tactical Schmeisser S60 223/5.56 60-Round AR-15 Magazine (Gen 2)
    $59.99

  • BLACK RAIN ORDNANCE 5.56mm 30-Round AR-15 Magazine with Laser Engraved Infidel Logo

    Black Rain Ordnance 5.56mm 30-Round AR-15 Magazine with Laser Engraved Infidel Logo
    $29.99

  • Hornady 5.56 NATO 75 gr BTHP Match Frontier 20/Box

    Hornady 5.56 NATO 75 gr BTHP Match Frontier 20/Box
    $27.99
    ($1.40 / round)

  • Hornady 5.56 NATO 55 gr FMJ (M193) Frontier 20/Box

    Hornady 5.56 NATO 55 gr FMJ (M193) Frontier 20/Box
    $24.99
    ($1.25 / round)

  • Tula Ammo 223 Rem 55 gr FMJ Steel Case 20/Box

    Tula Ammo 223 Rem 55 gr FMJ Steel Case 20/Box
    $22.99
    ($1.15 / round)

  • Winchester 5.56mm NATO 62 gr FMJ Green Tip M855 Penetrator 150 Round Value Pack

    Winchester 5.56mm NATO 62 gr FMJ Green Tip M855 Penetrator 150 Round Value Pack
    $189.99
    ($1.27 / round)

  • Winchester 223 Rem 55 gr FMJ USA Lake City Ammunition 150/Box

    Winchester 223 Rem 55 gr FMJ USA Lake City Ammunition 150/Box
    $189.99
    ($1.27 / round)

  • Winchester 5.56mm 55 Gr FMJ USA White Box 200/Box

    Winchester 5.56mm 55 Gr FMJ USA White Box 200/Box
    $249.99
    ($1.25 / round)

  • PMC 5.56mm 55 gr FMJ-BT X-TAC 20/Box

    PMC 5.56mm 55 gr FMJ-BT X-TAC 20/Box
    $24.99
    ($1.25 / round)

  • PMC 223 Rem 55 gr FMJ BT Bronze 20/Box

    PMC 223 Rem 55 gr FMJ BT Bronze 20/Box
    $24.99
    ($1.25 / round)

  • Hornady 5.56mm NATO 55 gr FMJ Frontier 150/Box (Oriented)

    Hornady 5.56mm NATO 55 gr FMJ Frontier 150/Box (Oriented)
    $189.99
    ($1.27 / round)

  • Sellier And Bellot 5.56mm 55 gr FMJ Tactical Ammo 20/Box

    Sellier And Bellot 5.56mm 55 gr FMJ Tactical Ammo 20/Box
    $24.99
    ($1.25 / round)

Product Description

The next-generation PMAG 40 GEN M3 is a 40-round 5.56x45 NATO (.223 Remington) polymer magazine for AR15/M4 compatible weapons. Along with expanded feature set and compatibility, the GEN M3 incorporates new material technology and manufacturing processes for enhanced strength, durability, and reliability to exceed rigorous military performance specifications.

While the GEN M3 is optimized for Colt-spec AR15/M4 platforms, modified internal and external geometry also permits operation with a range of additional weapons such as the HK® 416/MR556A1/M27 IAR, British SA-80, FN® SCAR™ MK 16/16S, and others.

The PMAG 40 GEN M3 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.

In addition, a redesigned bolt catch notch in the rear of the magazine provides increased bolt catch clearance, while an over-travel stop on the spine helps ensure the magazine will not over-insert on compatible weapons. Low profile ribs and new aggressive front and rear texture gives positive control of the GEN M3 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. An included pop-off Impact/Dust Cover can optionally be used to minimize debris intrusion and protect against potential damage to the top cartridge during storage and transit.

Features and Specifications

  • Next-generation impact and crush resistant polymer construction
  • Modified dimensions allow for wider compatibility with non Colt-spec platforms
  • Constant-curve internal geometry for smooth feeding
  • Anti-tilt, self-lubricating follower for increased reliability
  • Long life stainless steel spring
  • 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
  • Pop-off Impact/Dust Cover to minimize debris intrusion and for ammunition protection in storage and transit

Customer Comments & Questions

Customer Reviews

(5 out of 5) Excellent!!!
by from Kissimmee, Florida on

Magpul Mags Price, Excellent! Quality, Excellent! Sportsmans Outdoors Service, Excellent!  Shipping, Excellent! The best store for guns & accessories. No ones can beat this guys!!!