Glock 45 Problems that New Buyers Should Know About

“Is this the best Glock yet?” That’s the question you hear with the Glock 45. And there’s a very good reason for that too! Austria is where this Glock came from and it’s a semi-automatic pistol with a nine-millimeter chamber.

But is it all high and mighty? Not at all! The most common problems with the Glock 45 are: fail to feed, ejector issues, barrel issues, trigger issues, and slide issues.

I will discuss the solutions to all these problems and user reviews in this article. So read on till the end!

Features & Specifications of Glock 45:

Barrel Length102 mm
Magazine CapacityStandard: 17 Optional: 17 / 19 / 24 / 31 / 33
Overall Length189 mm
Caliber9 mm Luger
SightsAmeriglo sights
SafetySafe Action
Dimensions Width (Overall): 34 mm Height Incl. Mag.: 139 mm
WeightWith Empty Magazine 694 g
Trigger Pull26 N (depending on the configuration)
Common Glock 45 Problems and Solutions
Glock 45 Problems

Common Glock 45 Problems and Solutions

Fail to FeedReplace magazine springs, and use better ammo.
Ejector IssueChange ammo and troubleshoot.
Barrel IssuesPolish barrel with brass, change barrel with aftermarket ones.
Trigger IssuesChange connector spring. Lubricate the gun more often.
Slide Issues 

Fail to Feed

You’d fire 2-3 rounds and get slide lock with an empty chamber and rounds still in the mag. So the guns won’t feed.

Possible Reasons

Failure to feed concerning magazines:

  • Dirty magazine
  • Weak magazine spring
  • Deformed magazine (magazine sides or lips deformed)
  • Magazine not properly inserted
  • Weak ammo (Magpul, factory Glock 19 15-round mags)
  • +P ammo failure to feed.

The Fix

Replace the magazine springs, and use better ammo. You don’t need too expensive ammo, just anything other than white box ammo.

Firm up your hold. Try not to touch the slide stop with your hand.

Ejector Issue

Brass is thrown at least 15 feet by the gun when it fails to eject. Even weaker ammunition travels 10 feet.

Possible Reasons

Glock made some structural changes in the 45 to address the issue of weak ejection. It’s called the Breach Face cutout.

The breech face has a cutout that helps with casing discharge.

The Fix

The brass can travel 12 to 15 feet when using +P+ or hot hand loads. Avoid the type of ammo if it bothers you too much.

To prevent the brass from flying too much, you can change the parts. Glocks are simple to disassemble, and the parts are inexpensive.

Try fiddling with the ejector, extractor, or the spring pressure for the extractor plunger if you are an expert with firearms. Don’t do any of that in case you are a rookie or an amateur.

Barrel Issues

The barrels have lack of chamber support. You also can’t shoot lead bullets with this one without facing a bunch of jamming and BTF issues.

Possible Reasons

The Gen 5 G19, G19X, and G45 all use the same barrel. It is the Glock part 42707.

It differs from earlier-generation G19 barrels by its finish, rifling, and lack of VAR1 slope at the front top of the barrel hood.

There is enough chamber support in the Glock 45 than other models of Glock. But pushing loads higher than SAAMI spec is what causes head failures or ruptures.

The Fix

Change to a barrel that gives you more support. A barrel that can shoot lead, plated, or jacketed ammunition better!

However, you can shoot even lead with the factory barrels. The only thing you should do every hundred rounds is, give it a good brass brush.

Trigger Issues

The Glock 45 triggers are rather difficult to press smoothly. You need more pressure and control to do it.

Possible Reasons

The striker pin ages and becomes slightly misaligned. Therefore, seating it in the striker channel requires more effort.

To keep the trigger as clean as possible, the trigger bar/connector needs to be greased/lubricated. More frequently than in previous generations.

Check the trigger bar’s engagement with the connector as well. Trigger bar coating flaking off is a problem with G45 that led to heavy triggers.

The Fix

A new striker spring would probably solve the problem. If this is unsuccessful, grease the connector.

Remove the plunger next, and blow it into the recess. The plunger needs to sit several times. Reinstall everything after that

Slide Issues

When the mag is empty, the slide does not lock back. But racking the slide, it locks back with an empty magazine.

Possible Reasons

The following could be the reasons:

1) On the final round, your hand is pressing down on the slide lever release.

2) The added weight of any newly installed optics.

3) The frame and the slide lever release are crimped together.

4) Broken slide lever release spring.

The Fix

Try out various magazines and ammo. Replace or adjust the slide lever release spring.

User Feedback on Glock 45

According to the majority of users, the G45 is the best shooting Glock they have ever owned. It comes with excellent control. It is achieved by the shortened slide, lower reciprocating mass, and full-size grip.

The gun is exceptional and extremely accurate in its stock configuration with just the optic. The recoil pulse would be reduced and the gun would remain flatter if a comp was worn.

Just a great gun, really. Users largely favor all of its features. It feels more comfortable in the hand than the majority of other Glocks.

With a high-capacity magazine, you will fire 1,500+ rounds without experiencing a single failure. However, they are not revolutionary. It performs admirably for a compensated or silenced firearm.

Top 3 Alternative Guns of Glock 45

Based on comparing the specs, features, practicality, and performance, I have found the 3 best alternatives to Glock 45. 

Canik TP9DA

It almost matches the G45’s specifications, but it can hold one more round. Additionally, it has a striker-fired, double-action and single-action firing system. The lowly Caniks have much better ergonomics than any Glock, and they appear to be dependable from all accounts.

CZ P10C Compact King

The CZ P10C had truly taken many people by surprise. the hold ensures that the gun doesn’t move while you shoot. both accurate and cozy.

Sig X-Carry

Guns from the X series are nice. They have excellent accuracy and dependability. I’m not sure how else to describe the way the polymer Sig used for the frames feels cheap. If that makes sense, they feel hollow rather than solid.

Frequently Asked Questions (FAQs)

Can Glock 17 magazines be used on a Glock 45?

No. Due to the Glock 17 Gen 5 floorplate’s thickness and the G45’s lack of frontage relief.

Can Glock 17 magazines be used on a Glock 19?

No, they can’t unless you change out the floorplate..

What is the practical difference between Glock 45 and 48?

They are two completely distinct guns. A G17 with a G19 slide makes up the G45. A G19-sized gun with a thinner grip and 10 rounds is the G48.

Is Glock 45 really a 45?

Not really, it is a 9×19.


If you don’t already own a 19 or 17, I would say Glock 45 is a fantastic firearm. It is a really smooth shooter right out of the box, despite the fact that it is just a 19 sitting on top of a 17. You essentially get the best of both worlds.

Additionally, the balance is ideal. The G45 is preferred by so many people over other Glocks. It might balance slightly better when used with a silencer suppressor or when using larger hands.

The Safe Action System and support from torture testing that have made GLOCK a name associated with innovation and dependability are both present in the G45. So, definitely buy this if you’re craving it!

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