5 Most Common Glock 43 Problems And How To Fix Them

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I’ve spent countless hours testing, examining, and scrutinizing the Glock 43 in the field. But, like any adventure, I’ve run into a few hitches along the way. These hitches, these little quirks, led me to understand the Glock 43 in a way that only real, hands-on experience can reveal.

There were moments when my trusty Glock 43 would chamber inconsistently or it would FTE and double feed, frustrating me to no end. I faced the odd problem where the magazine wouldn’t drop, and sometimes, the trigger would just give me Problems. Heck, I’ve even struggled with Polymer 80 issues. 

But don’t worry. I’ve got my gripes, but I’ve also got solutions. I want to give you genuine insights into these issues and practical solutions.

Top Glock 43 Problems & Solutions

1. Chambering Issues

It was a regular day on the field, just me and my trusted Glock 43. Then something offbeat happened. No matter the ammo I used, whether it was Tulammo FMP or Corbon + P, the subsequent round didn’t fully chamber, and the spent cartridge didn’t fully eject. 

I noticed the subsequent round advanced by about a quarter to a third of an inch when I chambered a round and removed the magazine. It was a rhythm breaker, disrupting my shooting.


I cleaned, lubricated, and did a detailed strip of the gun, looking for a broken extractor hook. 

Additionally, I checked the chamber walls for debris. 

The breakthrough came when I stopped using steel casings. Once I reassembled properly, I found the issues had vanished.

2. Trigger Complications

I noticed an inconsistent behavior with the Glock 43’s trigger. The anomaly was that the trigger didn’t always revert to its original position when the slide was racked. 

This inconsistency was observed more in live fire scenarios as compared to dry fires, where the 

trigger exhibited a 100% reset rate. 


My investigation into the matter revealed that the culprit was the trigger springs. 

I resolved this issue by swiftly adjusting the trigger reset bar and swapping out the stock springs with ghost springs and trigger bar. 

3. Polymer 80 Complications

Another discrepancy I noted with the Glock 43 was linked to the Polymer 80. The problem occurred when I cautiously let the slide return home while keeping the trigger fully depressed. 

I noticed the slide was slightly too low, causing the trigger bar’s “shark fin” to over-engage with the firing pin safety.


I took some time to reflect on the issue and then decided to round off and polish the plunger’s profile until it had a reflective finish. 

Additionally, I cleaned the slide rail slots to remove any potential buildup of ceramic coating.

4. Magazine Complications

I experienced a recurring problem with the Glock 43’s magazine. At times, it would get stuck about halfway into the magazine well. 

The magazine also presented difficulties during reloading, as it wouldn’t always drop out as expected, which interrupted the rhythm of reloading.


My solution for these issues was to apply a thin layer of armor all over the magazine to decrease the friction. 

This slight adjustment resolved the magazine’s tendency to hang up, leading to a much smoother and more consistent Glock 43 experience.

5. Failure to Eject

Just when I thought my troubles were over, a new one sprang up. The Glock 43 suddenly had a Failure to Extract problem. This malfunction meant the fired case was only partially extracted while the slide tried to pick up the next round. 

This issue occurred even with factory ammunition.


After careful examination, I found the extractor might be the problem. 

A thorough cleaning and examination of the extractor, spring-loaded bearing, extractor plunger and spring, and the firing pin safety and spring ensued. 


The Glock 43, while having its share of issues, has proven to be an overall reliable firearm for us. From chambering inconsistencies to trigger complications, the journey with this equipment has been enlightening. 

The problems I encountered, however challenging, allowed me to learn and improve. 

It’s safe to say that Glock 43’s weaknesses have largely been outweighed by my successful solutions and its undeniable reliability in the field.


Are Glock 43 reliable?

Yes, the Glock 43 is reliable, especially when equipped with a red dot for increased precision.

What are the weaknesses of a Glock?

Glocks can face issues such as inconsistent chambering and failures to extract, mostly due to lack of maintenance.

Does Glock 43 jam?

Yes, the Glock 43 can jam, typically due to improper maintenance or when a round is not fully chambered.

Is a Glock 43 safe to carry?

Yes, the Glock 43 is safe to carry, thanks to its three passive, independent safeties.

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I'm Micheal, an avid shooter and hunting enthusiast from Texas. I'm a recreational shooter who loves to spend time at the range and enjoy learning about new firearms and gears. I love to write about guns and share my passion for shooting with others.

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