5 Glock 48 Failures + Best Fixes

I have known the Glock 48 as one of the finest CCW handgun. Having this upgraded version of the Glock 43 and Glock 43X for a while, I’m familiar with the strengths and challenges that come along with it.

The first time at the range, the gun was insanely competitive. While it’s highly considered ideal, it is not perfect.

In this article, I’ll share major Glock 48 problems and fixes that can get it closer to perfection.

Overview of Glock 48X problems and solutions

1. Slide not fully going into battery

One problem that forced me to send my G48 back to Glock is the slide not fully going into battery.

That’s to say, after firing a round, the slide, which is the top part of the gun that moves back and forth, doesn’t completely lock back into place.

It results in off-center strikes on the primer—the part of the bullet that ignites the gunpowder—and sometimes even misfires.

Cause and solution

One possible reason for this problem is an issue with the spring on the firing pin safety plunger, a small part inside the gun that helps ensure it fires safely.

If this spring is not correctly positioned, it can prevent the slide from fully returning to its proper position.

The solution is to ensure the spring on the firing pin safety plunger is correctly positioned. After confirming this, I tested the firearm again to see if the issue persists, implying that proper spring placement may resolve the slide malfunction.

Read Next: Glock 42 Problems (How I Got Around Them)

2. Ejection problems

The Glock 48 sometimes fails to eject brass properly. This problem manifests when the pistol fails to properly eject spent brass casings after firing.

Instead of the casing being forcefully ejected from the chamber, it can get stuck, leaving the shooter with a malfunctioning firearm. This issue occurs regardless of the shooter, magazine, or ammunition type.

I noted that this is one of the problems with Glock 19 Gen 5 as well.

The extractor, which is supposed to grip the shell and eject it, seems to lose its hold, leaving the brass stuck. The extractor often feels loose and doesn’t grip the shell well when the slide moves.

Cause and solution

This problem is often caused by a defective housing/ejector assembly. Another possible cause is a bent or kinked black plunger or an extractor spring stuck in its channel.

Replacing the housing/ejector assembly usually resolves the problem. If the issue persists, inspect the black plunger and the extractor spring. If either part is damaged or stuck, replace them to restore proper function.

3. Trigger complications

The trigger mechanism in the Glock 48 can present issues that disrupt the smooth operation of the firearm.  The slide fails to fully charge the battery unless the trigger is released.

In simple words, the slide does not return completely to its forward position after firing, which can interfere with the firing cycle.

As a new round is chambered, the trigger can snap forward unexpectedly to create an uncomfortable shooting experience.

Cause and solution

This complication may arise from the misalignment of the trigger bar’s “cruciform” with the hook of the trigger spring. A weak recoil spring assembly can also cause this problem.

Ensure that the trigger bar’s cruciform is correctly positioned in the trigger spring hook. If that doesn’t solve the issue, consult Glock customer service for professional assistance.

Modifying the connector might also help, but proceed with caution before making any changes.

4. Recoil spring complications

The Glock 48 sometimes struggles with its recoil spring. That said, the slide doesn’t advance fully until the trigger is released.

A common problem is the slide not fully advancing after firing a round. This malfunction can cause the gun to fail to cycle properly, hence jams or the need for manual intervention to push the slide forward.

The slide at times may move only partway forward until the shooter releases the trigger, or it may require a gentle nudge on the back to move into position.

Cause and solution

The likely cause of these complications is either incorrect lubrication or a weak recoil spring. Proper lubrication is essential for the smooth operation of the slide.

On the other hand, a weak recoil spring lacks the necessary strength to return the slide fully forward, especially after multiple rounds have been fired.

Begin by inspecting the Recoil Spring Assembly (RSA) according to the guidelines provided in Glock’s manual. If the RSA is found to be weak or worn out, replacing it with a new one should resolve the issue.

Also, review the lubrication method to ensure it meets Glock’s guidelines.

5. Magazine disruptions

Occasionally, the magazine in the Glock 48 sometimes disengages and drops out, regardless of how many rounds are loaded.

Users may find that the magazine gets stuck halfway when attempting to insert it, as if something inside the magazine well is obstructing its path.

Cause and solution

The primary cause of these disruptions appears to be the tight fit of the Glock 48’s magazine. The magazine well may not have enough clearance for smooth insertion and retention of the magazine. It therefore becomes dislodged during use.

This tightness can make it difficult to fully seat the magazine if it’s loaded to capacity.

Contact Glock to explain the problem and request an upgrade to a later model if available.

In the meantime, limit the number of rounds to ten or fewer, and be cautious with any modifications to avoid further complications.

Glock 48 alternatives

1. Sig Sauer P365 offers a compact design with a higher magazine capacity (10-12 rounds) than the Glock 48. Its slim profile, reliable performance, and ease of concealment make it an excellent alternative for concealed carry.
2. Smith & Wesson M&P Shield 9mm is renowned for not only ergonomics but also reliability. It has a similar size to the Glock 48 but offers customizable grip options. The model is a dependable choice for personal defense.
3. Springfield Armory Hellcat is a micro-compact pistol with an impressive 11+1 or 13+1 capacity. Its robust construction, adaptive grip texture, and U-Dot sights make it a formidable substitute for the Glock 48 in self-defense scenarios.

FAQS

Can I use aftermarket accessories on my Glock 48?

Yes, the Glock 48 is compatible with various aftermarket accessories, including sights, holsters, and extended magazines. Many Glock 43 and 43X accessories also fit the Glock 48 due to its similar frame size.

Is the Glock 48 reliable for self-defense?

Absolutely, it is built with Glock’s renowned reliability, featuring a consistent trigger pull, easy handling, and a slim design, making it dependable in critical situations.

What kind of ammunition does the Glock 48 use?

The Glock 48 uses 9mm Luger ammunition, one of the most common and widely available calibers.