5 Most Common Mossberg 590M Problems And How To Fix Them

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I’m excited to talk to you about the Mossberg 590M. Let me tell you, I’ve had the pleasure of testing this bad boy out in the field. 

It’s a solid shotgun, but like any piece of machinery, it’s not without its issues. 

What caught my attention were some common problems like firing pin issues, extraction problems, feeding issues, double feeding issues, and even bore problems. 

Yeah, it’s a handful. But hey, don’t sweat it! I’ve figured out some solutions that work pretty darn well. And that’s what this article is all about.

The aim here is to guide you through these issues and offer practical solutions to get your Mossberg 590M running smoothly. Stick with me, and we’ll sort it all out.

Overview of Mossberg 590M Problems Issues & their Solutions 

Mossberg 590M ProblemsQuick Solutions
Firing Pin DeformityReplace the deformed firing pin.
Extraction FailureClear chamber; slide back and forth.
Feeding IssueCheck cartridges and don’t ride the slide.
Double FeedingUse spare magazine; inspect feed lips.
Bore ObstructionClean bore; use quality ammunition.

Top 5 Mossberg 590M Problems & Solutions

1. Firing Pin Issue

Let’s dive right into our first issue: firing pin deformities. I remember being out in the field, taking aim, pulling the trigger, and—nothing.

Turns out, the firing pin was deformed, bent out of shape. And trust me, you don’t want to be in a situation where you can’t rely on your firing pin. 

This piece of metal gets a workout every time you shoot; eventually, it might bow or distort. This isn’t just a small glitch; it could lead to a host of other problems like primer explosions, which can further damage your Mossberg 590M and mess up its firing mechanism.


Now, how do we fix this? First, ensure you unload your shotgun for safety. Open it up and look at that firing pin. If it’s looking worse for wear, you have to replace it.

I did it myself, and it was straightforward. Just remove the old one, put the new one in, and give it a test run. Boom! Problem solved. No more misfires or other issues. 

So, replacing a worn-out firing pin is crucial for keeping your Mossberg 590M in tip-top shape. It’s a simple fix, but it makes all the difference in the world.

2. Extraction Problem

Alright, let’s tackle another pesky issue: the failure to extract. I’ve been out there, you know, aiming, feeling good about my shot, and then—uh-oh. 

The spent cartridge just wouldn’t budge. This wasn’t some random blip; it’s a known issue with the Mossberg 590M. What’s even worse? This problem can escalate quickly. 

You might find yourself with two cartridges trying to come out of the magazine at the same time. Yes, it’s as chaotic as it sounds. A misstep on your part can cause this, and it’s an issue that shouldn’t be taken lightly.


So, how did I resolve this? First things first, safety is paramount. Unload the shotgun and 

remove the magazine. Then, with the muzzle pointed in a secure direction, work that slide back and forth to clear the chamber. 

It’s basic, but it does the job. Don’t skip checking both the magazine and the chamber visually. Make sure they’re empty. After all this, I gave it another go. 

And guess what? It worked like a charm. Keeping these simple steps in mind can save you a lot of stress down the line.

3. Feeding Issue

Here we go, another issue that’s been bugging me: failure to feed. Picture this: you’re out in the field, and the conditions seem perfect, but then the cartridge just won’t feed into the chamber. 

Frustrating, right? The causes for this can be many: damaged magazines, weak magazine springs, dirt or oil accumulation, or even lousy cartridges. 

One time, even after a meticulous clean and oil job, my Mossberg 590M still wouldn’t feed properly. It felt like a roadblock that just wouldn’t clear.


So what did I do? First off, I removed the magazine and cleared the chamber. I reloaded and gave it another try, but this time, I was cautious not to “ride the slide,” which is a common mistake that blocks the recoil spring from doing its job.

 Believe me, once you’re aware of this, your feeding problems could vanish. Another pro tip: always double-check the condition of your cartridges and magazines before you go shooting. 

Clean out any dirt, oil, or gunk because these tiny things can make a huge difference. And just like that, my Mossberg 590M was back in business, feeding like a champ.

4. Double Feeding Issue

Let’s tackle one more hurdle that can be quite a headache: the double-feed malfunction. While out testing my Mossberg 590M, I encountered this problem more than once. 

One round is chambered, and then a second one tries to barge in like an uninvited guest at a party. The result? The slide gets jammed because it can’t move into the battery position.

Pretty much a mess, I can tell you. And yeah, this issue is often related to the magazine, particularly worn feed lips or weak springs.


So what’s the fix? For starters, I individually marked each of my magazines to identify the culprit causing the issue. 

This can be a game-changer in avoiding double feeds down the line. Secondly, always, and I mean always, carry a spare magazine. If you run into this issue in the field, quickly swapping to a spare can get you back in action in no time. 

Also, inspect your magazines often. Look out for worn feed lips and consider replacing the magazine if it’s not up to par. Trust me, tackling the problem at its source is the way to go. Keep an eye on those magazines, and you can avoid a whole lot of stress.

5. Bore Problem

Let’s dive into another issue that’s been a thorn in the side for many Mossberg 590M users: bore obstruction. I’ve had my share of disappointments when my shots went awry, and let me tell you, it can be a real downer. 

This issue usually happens when dirt, debris, or other foreign objects are trapped inside the bore. It’s not just a one-time inconvenience; this problem can impact the long-term performance of your Mossberg 590M. And the last thing you want is for your firearm to degrade over time.


So, how did I go about fixing this problem? For starters, make a habit of cleaning the bore religiously. A bore snake or a cleaning rod with the appropriate brush can do wonders. 

Secondly, before you head out, give a quick glance down the barrel to ensure it’s free from obstructions. If you spot any, a simple cleaning can save your day. 

I applied these simple steps, and voila, my Mossberg 590M was back to delivering accurate shots. So, if you’re looking to avoid this problem, these practical tips should get you sorted.

Final Verdict

Alright, we’ve talked about the Mossberg 590M’s ups and downs, right? This shotgun is a rugged piece of equipment; there’s no doubt about it. 

However, like anything, it’s not infallible. I’ve personally run into firing pin deformities, extraction failures, feeding issues, double-feeding, and bore obstructions during my time with it. Each of these hitches could put a dent in your shooting experience. 

But hey, there’s a silver lining. These problems are manageable. With a little know-how and regular maintenance, you can overcome these obstacles and get your 590M running like a dream. 

So, at the end of the day, I’d say this shotgun is pretty darn solid, especially if you’re willing to take the time to learn its intricacies and how to fix ’em.


Is the Mossberg 590M reliable? 

Yes, the Mossberg 590M is reliable and maintains the toughness of the company’s military-grade 590 model.

Which Mossberg 590 is best for home defense? 

The Mossberg 590A1 stands out as the most reliable option for home defense, passing the Mil-Spec 3443E test.

What is the capacity of the 590M? 

The 590M magazines come in capacities of 5, 10, 15, and 20 rounds and are designed for 2.75-inch shells.

Where is the Mossberg 590M made? 

Most firearms production, including the 590M, is based in Eagle Pass, Texas.

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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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