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Questions & Answers
Is this mag extension compatible with the 43x?

No, this is only compatible with the Glock 43. The 43x uses a different magazine with different dimensions.

by Mike B., Verified Owner, December 5, 2020
dimensions of 4 round magazine for Glock 43 Expert Answer

The dimensions are:
46mm high
52mm long
23mm thickness
Weight 37g

by Ethan C., Gear Expert, April 19, 2018
Customer Reviews
Helpful Positive Review FAB +4, it works by Fish, August 18, 2020
The stock mag is fine for CC. But, I wanted a 10rd mag for keeping in the bedroom. I drop tested it in the weapon and alone, fully loaded (unchamberad). It is solid and feeds well. Remember to clean and lightly lube your mags
3/3 found this helpful
Helpful Positive Review Completes the firearm by Brad, Verified Owner, July 16, 2018
I bought my 43 with every intention of getting these as I certainly wanted 10 rounds instead of 6. They were fairly easy to install, give my 43 a full hand grip, and no jams/malfunctions after the 1st 200+ rounds. Completes the firearm in my opinion...
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5/5 found this helpful
Helpful Positive Review Well, + 3 for sure by Mike, October 25, 2020
Trying to put 10 rds in my G43 wasn't happening; maybe when the main spring loosens up. For now it's a +3. Wasn't to hard to put on but without the Glockstore base plate removal tool to take off the factory base plate, I never would have got the mag...
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2/2 found this helpful
Helpful Positive Review IT WORKS BUT EXPENSIVE by BRITTANYMAN, Verified Owner, March 24, 2018
Directions for installation could be better. I was worried that in trying to separate the two halves of the extension that I would break it. Once I got it together I loaded it with 10 rounds and manually worked the slide to see if I would get a mal...
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1/1 found this helpful
Helpful Positive Review p-43 mag extension by dean, February 2, 2020
Overall great extension. Grip is perfect. I would have easily given a 5th star however, the 10th round is a bit difficult to insert. I would suspect after a few times of reloading the mag it will eventually fail from the amount of force needed to Pla...
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1/1 found this helpful
Helpful Positive Review Adds needed capacity to Glock 43 Standard Mags by WaveRunner, Verified Owner, June 7, 2018
Installs easily - works every time so far! Adds grip size and rounds - good to go! Doesn't make mag with extender too large to be able to carry as a spare. I use a Pearce Grip +1 finger extender for CCW and mag with this as backup.
2/2 found this helpful
Read All 22 Reviews

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Product Info for FAB Defense 4 Round Magazine extension for Glock 43

Having extra rounds in your mag can be a life-saving factor in self-defense and tactical situations. The FAB Defense 4 Round Magazine Extension for Glock 43 is a magazine floor-plate replacement that adds 4 extra rounds to your arsenal for a total of 10 rounds. The ergonomic design of these Pistol Magazine Extensions by FAB Defense allows secure manipulation of the magazine and a full grip on the weapon when you use it, due to the contoured finger indents on the extension. Another helpful feature of this FAB Defense 43-10 Glock Magazine Extension is the innovative spring plate design that allows for the use of your original magazine spring, requiring no further parts or modifications. From military applications to home defense, the FAB Defense Glock 43 Tactical Mag Extension is an excellent addition to your Glock while giving you extra peace of mind, and four extra bullets, which just might save your life.image

Specifications for FAB Defense 4 Round Magazine extension for Glock 43:

Manufacturer: FAB Defense
Fabric/Material: Polymer
Magazine Capacity: 4 Round
Gun Make: Glock
Gun Model: Glock 43
Condition: New

Features of FAB Defense 4-Round Magazine Extension for Glock 43, 1S0-MZX-43-10:

  • Glock 43 only.
  • Enables a full grip on the handgun.
  • Contoured finger indents for a firm grip during magazine manipulation.
  • Innovative spring plate allows the use of the original magazine spring.
  • Fiberglass reinforced polymer construction.
  • + 4 rounds for a total of 10 rounds in the magazine.

Package Contents:

  • FAB Defense 4-Round Mag Extension, Glock 43, 1S0-MZX-43-10

FAB Defense 4 Round Magazine extension for Glock 43 Orderable Models

List of Orderable Models

FAB Defense OPMOD 4 Round Magazine Extension For Glock 43, Grey , MPN: FX-4310B-OPMOD Grey-KIT2023 , Code: 1S0-PME-43-10-FX-4310B-OPMOD-Grey-KIT2023
FAB Defense 4 Round Magazine extension for Glock 43, Black, FX-4310B , MPN: FX-4310B , UPC: 7290105944771 , Code: 1S0-PME-43-10-FX-4310B-4RD
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