5 Glock 17 Problems Exposed: What They Aren’t Telling You

In the mission to understand the intricacies of the Glock 17, extensive testing and use have revealed its strengths and weaknesses.

Despite its reputation for reliability, niggling issues such as those with the MOS system have surfaced during occasional cycling and ejection hitches, along with magazine snags and trigger difficulties. 

These concerns prompt a closer examination, particularly concerning the RSA/guide rod area.

This article aims to delve into personal experiences with the Glock 17, exploring the challenges encountered and the solutions discovered. 

By offering practical insights, readers can embark on a journey through the nuanced world of troubleshooting and optimizing this iconic firearm.

Problems & Solution at a Glance

5 ProblemsWith Their Practical Solution
Ejection IssueSlide racking, cleaning, lubrication crucial for ejection issue.
MOS ProblemsUtilize a caliper to ensure levelness, especially with a milled slide.
Magazine IssuesChoose Glock-branded magazines for firmer springs, reducing jams.
Trigger ProblemThorough Cleaning and part replacement fix Glock 17 trigger issues.
RSA/Guide Rod IssueCorrectly seat RSA and guide rod for Glock reliability.
Glock 17 problems

Glock 17 Problems You Must Know

1. Ejection Issue:

When addressing Glock 17 problems, one recurring challenge that disrupts shooting sessions is the ejection issue.

Imagine the frustration of a smoothly cycling Glock 17 suddenly halting mid-action, with a live round stubbornly stuck in the chamber. 

As a Glock 17 owner, your role in preemptive maintenance and vigilance is crucial. Often, a malfunctioning extractor can be the root cause of the ejection issue, underscoring the importance of your proactive approach.

The root cause of the ejection issue typically lies in the extractor mechanism’s failure to function correctly, whether due to wear, neglect, or manufacturing flaws.

This can manifest as a live round getting stuck in the chamber, the slide not fully cycling, or the spent casing not ejecting properly.


A field-tested approach is essential to tackle the ejection issue head-on. 

Regular slide racking and hand cycling are imperative to gauge the efficiency of critical mechanisms. First, ensure the firearm is unloaded. Then, pull the slide back and release it, allowing it to move forward under its own spring tension.

Repeat this process several times, observing the movement and listening for unusual sounds. Thorough cleaning and lubrication further ensure seamless ejection during firing. 

For persistent ejection problems, seeking expert advice from a seasoned gunsmith can offer tailored solutions.

This optimizes your Glock 17’s performance and restores your shooting confidence, a rewarding feeling for any gun enthusiast.

2. MOS Problems:

One common grievance among users concerns MOS (Modular Optic System) issues, which stem from the integration of red dot optics onto the firearm’s platform.

These can include difficulties in aligning the red dot sight with the firearm’s bore axis, issues with the mounting surface, or problems with the stock plate. 

While the concept is sound in theory, achieving optimal sighted-in conditions can be a high-stakes hide-and-seek game.

Aligning the red dot sight with the firearm’s bore axis often presents a challenge. Discrepancies can emerge despite efforts to locate the elusive dot precisely, particularly with aftermarket options.

Issues such as a slightly bent stock plate or imperfections in the mounting surface can compromise the integrity of sighted-in conditions, which refers to the alignment of the red dot sight with the firearm’s bore axis.

When these conditions are disrupted, it can lead to inaccurate aiming and decreased shooting performance.


Tactics of MOS challenges demand a precise approach. 

Achieving optimal alignment between the optic and MOS surface often requires considering modifications, such as a specially milled slide, to ensure the perfect level. 

Yet, before any alterations, careful calliper checks are essential to weigh potential trade-offs.

To find solutions, exploring reputable suppliers such as Brownells or Lonewolf for aftermarket components can enhance dot control and overall shooting prowess. 

However, mastering this setup requires dedicated practice to harness its full potential. 

Amidst this pursuit, navigating the inherent trade-offs involved in modifying the firearm’s original design is vital, balancing improved performance with reliability concerns.

For instance, while modifications can enhance the firearm’s performance, they can also increase the risk of malfunctions or void the warranty. It’s important to carefully consider these factors before making any changes.

3. Magazine Issues:

Magazine issues can prove to be persistent adversaries. Whether encountered during target practices or field tests, the reliability of 10-round magazines versus 17-round magazines has been a topic of contention. 

During extensive testing of the Glock 17, I’ve navigated through scenarios where rebellious magazines frequently jammed, disrupting shooting sessions.

Upon closer inspection, it became evident that incorrect springs were a potential culprit behind the jamming episodes.

The magazines’ anatomy, particularly their peculiar tendency to rattle, hinted at underlying issues affecting the feeding of 9mm rounds. 

This led to the formulation of a hypothesis: could the design discrepancies between 10-round and 17-round magazines exacerbate the problem?


Magazines bearing the Glock logo seemed less problematic, suggesting a potential correlation between branding and reliability. 

Further investigation revealed that these branded magazines were equipped with firmer springs, significantly reducing jamming instances.

Rest assured, the missing piece of the puzzle is the strength of the magazine springs. By upgrading to magazines with firmer springs, you can enhance the reliability of your Glock 17, a solution that has been proven effective. 

Based on my experiences, I highly recommend getting these upgraded magazines into your hands to ensure smooth shooting sessions.

4. Trigger Problem:

Regarding Glock 17 problems, a few issues disrupt the rhythm of target practice, like a malfunctioning trigger. 

Picture this: you’re in the midst of a session, immersed in the flow when suddenly, the trigger fails to break or reset. 

It’s a moment of frustration and silent contemplation as you try to diagnose the stubbornness of your firearm.

The trigger is crucial for initiating the slide movement and chambering the next round. When it fails to break or reset correctly, the shooting flow is interrupted, disrupting concentration and performance. 

This calls for a closer examination of the trigger mechanism and its interaction with the slide when fully forward.


A thorough clean-up can work wonders.

Firstly, a meticulous cleaning regimen can often resolve trigger issues, removing debris and buildup that hinder smooth operation. 

Additionally, inspecting and replacing components like the faulty firing spring can make a significant difference.

Common causes of trigger issues can include a worn or damaged firing spring, a misaligned trigger bar, or a dirty trigger mechanism. By identifying and addressing these issues, shooters can restore reliable performance to their Glock 17 triggers. 

Shooters can breathe new life into their Glock 17 triggers and restore reliable performance by undertaking these jobs with care and precision.

5. RSA/Guide Rod Issue:

One tricky aspect of Glock 17 problems can be the RSA/Guide Rod issue. During routine press checks or when returning the slide with an empty magazine, the guide rod attached to the RSA can sometimes present instances where it unexpectedly pops out of its home. 

This unexpected adventure can be frustrating and potentially disruptive to your shooting experience.

The guide rod is a critical component in the Glock 17, ensuring the proper function of the RSA during cycling. 

However, instances where it pops out can lead to complications, particularly with the barrel lug. 

This necessitates careful attention and potential troubleshooting to ensure the guide rod remains securely in place during operation, minimizing disruptions and maintaining firearm reliability.


Finding the right solution for the RSA/Guide Rod issue can make all the difference. Ensuring the RSA and guide rod are properly seated in their proper place within the firearm’s components can breathe new life into your shooting experience. 

Even after a rough day at the range, taking the time for a thorough check-up of these crucial components can prevent future issues from arising.

By taking the time for this check-up, you can maintain the reliability and performance of your Glock 17, ensuring smooth operation every time you pull the trigger.

My Final Conclusion:

Reflecting on the journey with the Glock 17, I see that its robustness and simplicity have genuinely stood out. This firearm’s ease of use, coupled with its precision, has won over many shooters’ hearts, including mine.

Along the way, challenges like magazine issues and stubborn triggers have occasionally surfaced, reminding us that even the most reliable tools can have their off days.

Yet, in these moments, the odd hiccups, like the RSA/guide rod issue, highlight the beauty of overcoming obstacles. 

Through perseverance and resourcefulness, shooters have discovered and restored the Glock 17 from good to great. 

Its reliability and performance remain unmatched, making it a solid choice for enthusiasts seeking a firearm with character and resilience amidst its quirks.

My Friends Feedback:

Conversations with fellow enthusiasts and users reveal a recurring topic concerning the Glock 17 gen 5. 

Many have reported instances where rounds have jammed during operation, leading to feed failure. These incidents are often traced to slide, slide stop, barrel interaction, and magazine and ammunition compatibility issues. 

Despite efforts to lubricate components as per the instruction manual, lubricating alone only sometimes prevents failure-to-feed scenarios. For more insights into Glock 17 Gen 5 performance, consider checking out the Glock 17 Gen 5 review.

Users have experimented with techniques like racking the slide and ensuring an adequately loaded magazine but encountered persistent challenges related to ammo, RSA (Recoil Spring Assembly), and binding within the firearm’s mechanism. 

The accumulation of debris and brass or steel burrs from machining exacerbates these issues, necessitating detail strip cleaning of slide internals using tools like Q-tips and flashlights. 

Despite efforts to rectify problems independently, some have contacted Glock and purchased replacement components amid panicked retail buying.

Engaging with fellow shooters, a recurring topic in our discussions revolves around the Dillon 550 reloading experience integrated with the Glock 17. 

Users have encountered challenges with the recoil spring, mainly when experimenting with various loads, including factory reloads using Titegroup and Zero 115 gr. Jacketed round nose bullet. Concerns about the overall length (OAL) and chronograph (Chrono) performance have surfaced, with occasional failures to feed (FTF) issues captured in photos. Glock 19x problems.

The evolution of the Glock 17, from the Gen 3 G35 to the Gen 5 34, has seen users experiment with accessories like the DPP, Double Diamond barrel, and tungsten guide rod, sometimes deviating from the factory components. 

Ammunition-related Issues, including LAPD range brass, Armscor 180 gr, American Eagle 165 gr, Federal Range 180 gr, and Federal Syntech 180 gr, have been part of the ongoing dialogue. 

The interplay of magazine springs, recoil springs, and lightened cuts in the context of USPSA competitions adds a layer of complexity to the feedback loop, where nuances like ejection, chamber check, and slide locked into battery are meticulously analyzed concerning different recoil spring weights.

Common Questions Asked About GLOCK 17

Why is Glock 17 illegal?

The Glock 17 Gen 3 is legal in California, but the Glock 17 Gen 4 is NOT. Why? Mostly timing and politics.

Why does my Glock 17 jam?

One of the main issues that can cause a Glock to jam is improper maintenance. If the gun is not cleaned and lubricated regularly, dirt and carbon buildup can cause it to malfunction.

Is Glock 17 safe?

The Glock lacks an external manual safety but includes three internal safety mechanisms to prevent accidental discharge. Pulling the trigger disengages all three safety mechanisms simultaneously.

Can a Glock 17 fire if dropped?

The trigger safety is designed to prevent the pistol from firing if it’s dropped or if the trigger is subjected to any pressure that isn’t a direct-firing pull. WARNING: If the trigger is in the forward position, the pistol may be loaded.

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