Crucial Glock 19 Problems: What You Must Know

Undertaking the Glock 19 journey is a captivating rollercoaster ride that exposes unexpected quirks and challenges. It defines the unique character of this firearm. I searched specifically for 6 problems like slide concerns, barrel issues, etc.

This article serves as a guide, exploring the nuances of Glock 19 ownership.

Let’s delve into easy solutions.

6 ProblemsWith Their Quick Solutions
MOS ProblemTaming this unruly beast with custom-milled optics.
Slide ProblemsReplacement and expertise of a seasoned gunsmith
Barrel IssuesApplying a bit of oil to the barrel’s exterior.
Ejection IssueOpt for the apex extractor.
Trigger ProblemSending the Glock 19 back to its roots.
Hump ProblemPractice and acceptance.
Glock 19 Problems

Glock 19 Problems with practical solutions

1. MOS Problem

Our first concern? Yes, it is an MOS problem. Navigating through the complexities of milling and various plate and screw sizes feels similar to a hide-and-seek game in choppy waters.

The MOS problem disrupts the otherwise smooth journey of attaching optics. It turns what seems like a straightforward task into a loop of challenges.

In my research, each encounter with the MOS problem adds a layer of learning. Frustration may arise, but the challenge becomes a defining point in the journey, testing patience and expertise.

Read More: Glock 21 Gen 4 Problems with Effective Solutions


Okay, so the solution lies in taming this unruly beast with custom-milled optics. Particularly those from Holosun.

Opting for a snug fit through custom milling ensures a reliable and precise operation. It provides a tailored solution to navigate the complexities of the Glock 19 optics world.

This adjustment, based on personal expertise, turns the Glock 19 into a reliable ally. It unlocks its full potential for those seeking a personalized and effective firearm-optics combination

2. Slide Problems:

Next, it is a slide problem. The slide is considered the heart of the firearm.

It contains crucial elements like the trigger housing, slide release, trigger bar, and safety plunger.

However, a notable issue arose when attempting to achieve a lock-back feature on an empty magazine.

Racking the slide proved to be a real pain as it didn’t consistently lock back after the last round.

The slide often jammed about 0.1-0.25 inches back, prompting moments of head-scratching and examination with flashlights.

The elusive nature of the problem in the field made it a perplexing puzzle to solve.

One potential culprit I discovered was a worn trigger bar. It potentially contributes to this recurring issue.


A comprehensive solution emerged through a meticulous examination by a trusted gunsmith.

The hunch led us to focus on the critical components, the trigger bar and trigger housing.

Precision adjustments were made to ensure seamless interaction. The diagnosis indicated that the trigger bar likely needed replacement.

It was with the expertise of a seasoned gunsmith, that this crucial task was efficiently undertaken.

Upon thorough evaluation, it became evident that the trigger housing required adjustment to rectify the issue.

3. Barrel Issues:

The barrel emerges as a critical component, often facing challenges related to its wear-and-tear threshold.

Specifically, the Marksman barrels reveal a flaw in their finish. The wear-and-tear threshold of these barrels falls far below expectations, particularly marked by the characteristic flaw of the black finish.

Over time, the black finish of the Marksman barrel exhibited a rapidly disappearing trait. It emphasizes the need to find comfort in the reliability of the barrel’s functionality.


Seeking a solution, apply a bit of oil to the barrel’s exterior.

This classic approach significantly slowed down the wear and tear. It offers a practical and efficient resolution to the persistent issue.

The most straightforward solutions are the most effective. I discovered the power of routine maintenance.

By incorporating a touch of oil into the maintenance routine, you can extend its functional lifespan.

4. Ejection Issue:

In the domain of Glock 19 problems, the issue of ejection stands out as a unique challenge. The ejection process often deviates from the expected precision.

Spent casings consistently hit shoulders, forearms, and even heads.

It is a sight that becomes a rare occurrence in most firearms, but not with the Glock 19.

My research with Glock 19 unveiled the complexity of this issue. Even a seemingly minor factor, such as a new cut on the ejector, played a role in addressing the ejection challenge.


Here, a tactical solution emerged in the form of the Apex Failure Resistant Extractor. Owners opted for the Apex extractor, and the results were promising.

The journey of upgrading the gun with the Apex extractor delivered a tangible improvement in ejection reliability.

The erratic ejection performance transformed into a more consistent and reliable process.

5. Trigger Problem:

Okay, what’s next? It involves a trigger problem. It involves the S clip within the front sear housing spring. This seemingly inconspicuous component turned out to be the offender.

Over time, the trigger exhibited an unresponsive demeanor, behaving at its whim.

After a thorough investigation, the culprit appeared to be the S clip. It has developed a nasty habit of falling off.

This issue became more prominent during field use, raising concerns about the reliability of the Glock 19 trigger.


One recurrent issue involves the slide and slide lock, creating a baffling predicament for Glock enthusiasts.

A seemingly simple problem surfaced where the slide lock insisted on making its presence feel stubborn. Taking care of this matter became crucial before each slide racking, as the trigger’s stubborn behavior persisted.

The solution to this predicament involved a straightforward move, sending the Glock 19 back to its roots.

Glock’s expertise proved invaluable in resolving this issue.

Before racking the slide, it was imperative to ensure that the slide lock problem had been taken care of.

Despite its initial baffling nature, this problem became simpler to manage with each trip back to Glock.

6. Hump Problem:

At last, hump problems emerge as a specific concern for owners.

The hump at the base of the grip has sparked various opinions among gun enthusiasts.

While some appreciate the design, others find it to be a seemingly bizarre and unnecessary addition.

This hump has garnered more than a few complaints. Individuals express discomfort, asserting that it can alter the way they hold and shoot the weapon.

This contentious feature has ignited debate among Glock users. Some argue that the hump is a distinctive aspect of the Glock 19’s identity.

It is a deliberate choice by the manufacturer to enhance the overall look and feel of the weapon.


Unfortunately, altering it is not a straightforward task. A flat piece of plastic constitutes this hump, and finding an immediate solution can be challenging.

Online forums often discuss this concern, with people seeking ways to either replace or modify the hump.

The truth is, there’s no quick fix or readily available solution for the hump problem.

The good news is that users can become more comfortable with the grip’s peculiar design.

Over time, many users find that they become okay with this cosmetic change, accepting it as a unique characteristic of the Glock 19.

My Final Conclusion

In the realm of Glock 19, every adventure is a reflection of a thorough examination.

My research was not exempt from the bumps along the road: the fussy MOS, tricky slide, flaky barrel, erratic ejection, and temperamental trigger.

Yet each of these challenges provided an opportunity to explore, innovate, and overcome.

The journey became a tale of resilience and adaptation.

I also found the resilience to adapt and overcome, shaping not just a gun but a memorable and enriching shooting experience.

My Friends Feedback

Many of my friends who own different Glock models shared their experiences, especially with the Glock 19.

One big issue they talked about was the trigger. Compared to triggers from other brands like Sig Sauer or Ruger, the Glock trigger felt less smooth and had a longer pull.

But despite this, they all agreed that Glock guns, including the Glock 19, are very reliable even after many years of use.

Another thing they discussed was the look of the Glock 19. Some people didn’t like the bump at the bottom of the grip, finding it uncomfortable.

However, newer models like the Gen 5 have this bump, and owners have gotten used to it.

People shared their thoughts and suggestions online, like changing the grip or replacing the bump with a flat piece. This community sharing helped people find solutions to grip issues.

In the end, the journey of the Glock 19 showed that even with flaws, there’s always room for improvement.

Each problem, whether it’s with the trigger or the grip, became a chance for Glock fans to find new ways to make their shooting experience better.

Common questions asked about Glock 19 Problems

How reliable is the Glock 19?

For many years, the Glock 19 has stood as the benchmark for concealed carry firearms, and it remains a superb option. Its reliability, minimal bore (reducing muzzle rise), lightweight design, and a capacity of 15+1 rounds make for an outstanding combination.

How bad is Glock 19 recoil?

By adopting a correct shooting stance and maintaining a strong grip, the muzzle lift upon firing will be minimal, and recoil will be virtually nonexistent. The 9mm caliber is recognized for its reduced recoil, and the Glock 19 incorporates design features that enhance recoil control. Unless you experience severe arthritis in your hands or wrists, managing recoil should not pose a problem.

Why is my Glock 19 jamming?

In general, various factors can contribute to a Glock experiencing jams. These may include inadequate firearm maintenance, dirty conditions, subpar ammunition, a weakened recoil spring, improper grip or stance, and excessively tight magazines.

Which generation of Glock 19 is best?

In a general comparison between Glock Gen 3 and Gen 5 pistols, the Gen 5 guns tend to outperform in several aspects. The Gen 5 barrels exhibit improved performance, the trigger is enhanced, there is an option for a MOS model, the inclusion of swappable backstraps adds versatility, and some individuals prefer the absence of finger grooves due to potential discomfort.

Will a Glock 19 last a lifetime?

The lifespan of a Glock pistol is potentially indefinite, contingent upon your commitment to regular maintenance. Cleaning and applying a light layer of lubrication after each use are essential practices. If the firearm is anticipated to be inactive for extended durations, it is advisable to perform a field strip and apply lubrication every six months.

Is Glock 19 a safe gun?

The trigger incorporates a safety mechanism preventing it from being pulled unless deliberately depressed. Additionally, there are complementary safety features such as a firing-pin safety and a drop safety. Whether you’re skydiving, engaging in hands-on activities, or experiencing a fall from a turret, rest assured that your handgun won’t accidentally discharge.

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