Shield Arms +4 mag extension for the Glock 43X and Glock 48 - G43X-ME-4

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Shield Arms +4 mag extension for the Glock 43X and Glock 48 - G43X-ME-4

The Shield Arms Glock 43X/48 Magazine Extension adds 4 rounds to your OEM Glock 43X/48 magazine. Our unique, easy access floor plate design allows you to quickly access the spring and follower without having to remove the extension from the magazine body. Comes with a 100% lifetime warranty, and the Shield Arms Spring for Life guarantee.


  • Unique easy access floor plate design to service or clean the magazine body without the need to remove the magazine extension from the magazine body
  • Index cuts on the extension body to increase grip when coming out of a magazine pouch
  • Machined from billet 6061 aluminum
  • Type 2 anodized
  • Adds 4 rounds to Glock 43X/48 9mm
  • Comes with a +10% power spring
  • Fits OEM Glock 43X/48 10 round magazines only
  • Proudly made in the USA
  • Patent Pending Design
  • Fits most aftermarket flared mag wells
  • Lifetime manufacturer warranty
  • Color: Black

Please Note:

The following states have restrictions on "high capacity" magazines:

  • 10 Round- CA, MA, MD, NY, HI
  • 15 Round- NJ
  • We cannot ship to these states unless purchased by a Law Enforcement Agency

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  • 5
    Easy to install looks sweet

    Posted by Charles on Jul 12th 2019

    Great way to add 4 rounds to your 43X. Atlantic tactical was least expensive around