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Reviews & Ratings for FAB Defense OPMOD 4 Round Magazine Extension For Glock 43 — 14 reviews

(14 reviews)
FAB Defense OPMOD 4 Round Magazine Extension For Glock 43
FAB Defense OPMOD 4 Round Magazine Extension For Glock 43
$23.99 $4.99 Save 79%
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Most Helpful Positive Review Good +3 option
As others have stated it adds 3 rounds not 4. However it’s the best option on the market. Solid construction took all of 5 mins to remove plate from original mag and install extension
Most Helpful Negative Review These are +3
I gave 3 Stars these are +3 not +4 but otherwise functional and worth the effort and cost
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Works OK, not reliable enough for EDC

by Real human being, Verified Owner from GA, United States Written on July 29, 2025
There are two different revisions of Glock mags - they work with the first but they only get +2 or +3 capacity with the second. Additionally the stock springs are not reliable with these extensions, so I got extra power springs and gutted the extended spring pieces in these extensions and they now feed reliably. However, it would have been cheaper just to get shield arms magazines in the first place. I've had no reliability issues with those and they have a smaller footprint than these extensions. Unless your EDC is perfectly flat against your body these stick out like a sore thumb.
Pros:
  • They kind of work?
Cons:
  • not worth the money
  • Needed extra power springs
Best Used for:
  • Range use
Would recommend: No
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Fab extension 4+ for glock mag

by Rangemaster.er, Verified Owner from NJ, United States Written on June 7, 2025
Very easy to put on, spring is a little stiff for the last round, but breaks in after a while.
Would recommend: Yes
Was it helpful to you? Yes | No
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FAB Defense OPMOD +4 for G43

by Orlando, Verified Owner from TX, United States Written on May 22, 2025
Easy to install , use factory mag spring , better grip
Would recommend: Yes
Was it helpful to you? Yes | No
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Fab defense

by Steve, Verified Owner from PA, United States Written on March 5, 2025
I was shock how well they worked, they are easy to install
Would recommend: Yes
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Looks good but awkward fit on mag

by Davin Sampay, Verified Owner from LA, United States Written on February 18, 2025
Awkward fit on oem 43x mag. But looks good with PSA micro dagger grey frame. It fits almost collapsing the mag but it don’t so I went with it and it feeds
Would recommend: Yes
0 of 3 found the following review helpful.
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G43 Grip Extension

by Spike, Verified Owner from LA, United States Written on February 9, 2025
Great product! Fit is excellent, plus the big benefit is that it has an integral floor plate with the spring underneath. This eliminates the need to use the old floor plate & no need for an extra power mag spring! Definitely will buy more!
Would recommend: Yes
Was it helpful to you? Yes | No
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FAB Defense OPMOD 4 Round Magazine Extension For Glock 43

by Chris, Verified Owner from FL, United States Written on February 5, 2025
Great attachment for the Glock43. This attachment creates a very secure hand position and comfortability. I recommend this extension.
Would recommend: Yes
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more like +3

by Limp noodle, Verified Owner from PA, United States Written on December 10, 2024
Pretty bulky and only holds +3 not the advertised 4, that said it does have a solid feel. Wouldnt pay full price but probably worth the $5 i paid. Does not fit amend 2 mags.
Would recommend: Yes
2 of 2 found the following review helpful.
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Plus three is more accurate

by RockHound, Verified Owner from IN, United States Written on April 17, 2024
These work well and are easy to install but they only add 3 rounds .
Pros:
  • reliable
Cons:
  • They are plus 3 not plus 4
Would recommend: Yes
Was it helpful to you? Yes | No
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Works pretty good

by John, Verified Owner from TN, United States Written on March 1, 2024
Only adds 3 rounds and is very bulky compared to pics but works
Would recommend: Yes
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