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If you’re a proud owner of a Mossberg 500, you’ll know it’s one of the most reliable shotguns on the market. But to keep it in top shape, regular cleaning’s a must. I’ve been there, and I know the process can seem daunting.

In this article, I’ll break down the steps to clean your Mossberg 500 effectively and safely. From disassembly to the nitty-gritty of cleaning each part, we’ll cover it all. I’ll also share some handy tips that I’ve picked up from years of experience.

So, whether you’re a seasoned gun enthusiast or a novice just starting out, stick around. This guide’s sure to help you keep your Mossberg 500 clean, functional, and ready for action.

Disassembling the Mossberg 500

Before I delve into the nitty-gritty of disassembling your firearm, safety should always be your top priority. Ensure the gun is not loaded, and the safety is in the ‘on’ position.

Now that we’ve covered the safety check, let’s dive into your Mossberg 500. The first logical step involves removing the magazine plug and spring. You can do this by unscrewing the cap on the magazine tube. This will automatically release the spring and, consequently, the plug.

The next step involves extracting the barrel, which is a straightforward process. After removing the magazine plug and spring, you push the slide halfway up, then gently pull off the barrel from the receiver.

In the third step, you’ll remove the trigger assembly. To achieve this, you must punch out the two pins that hold the trigger assembly in place. Using a punch tool, strike the left side of each pin gently until they fall out on the right side. This allows for the safe extraction of the trigger assembly, and it blooms open the path to the shell elevator and bolt slide.

Finally, a crucial part of disassembling the Mossberg 500 is making sure you remember how to reassemble it. It’s easy to pull parts off a gun, but getting them back together? That’s the real challenge. Don’t worry, though; I am going to guide you through every inch and pivot until your Mossberg is back as it should be.

The Mossberg 500 is indeed quite simple to disassemble if you follow these steps. These steps will allow you to effectively reach all of the areas you’ll need to clean. Before attempting any disassembling or cleaning, make sure you’re comfortable with the process or seek assistance.

Remember, your goal is to maintain your firearm, so do not rush these steps. Each procedure might be simple, but taking your time and focusing will ensure the disassembling process is effective and safe. We’ll go deeper into each step in the next part, where I’ll walk you step-by-step on how to properly clean each part.

Gathering the Necessary Cleaning Supplies

Let’s shift gears and tackle the topic of cleaning supplies now. Cleaning your Mossberg 500 is pretty straightforward, but choosing the right tools and solvents for the job is a crucial step. So, what exactly do you need to keep your shotgun in peak condition?

A universal gun cleaning kit is a must-have. These little kits are typically packed with all the essential items:

  • Bore brushes
  • Cleaning rods
  • A slotted patch holder
  • Cleaning patches
  • A cleaning jag

Different shotguns, different barrel sizes. Therefore, it’s also wise to tailor your kit with a 12-gauge brush and jag. It’s true, universal kits often come with a suite of brushes for various calibers, but a quality 12-gauge brush specifically designed for your Mossberg 500 will do wonders.

Besides these tools, good cleaning solvents and gun oil are necessities. Solvents work to dissolve grime and residues while gun oil ensures your shotgun parts remain lubricated, reducing friction and preventing wear and tear in turn.

When choosing solvents and beretta shotgun oil, you can’t go wrong with reputable brands such as Hoppe’s No. 9, Ballistol, or M-Pro 7. Just make sure you’re grabbing solvent and oil targeted for shotguns, not just any generic lube or cleaner.

You’ll also need something to catch falling debris while cleaning. A work mat is a fantastic solution for this. Not only will it protect your work area but it’ll also stop small parts from getting lost.

Let’s not forget about safety – wear nitrile gloves. Cleaning solvents contain chemicals that may cause skin irritation. Plus, you’re dealing with lead residues.

Those are the key supplies you’ll need. Of course, feel free to add additional tools and utilities based on personal preference. Some might prefer using a bore snake instead of a traditional rod and brush. Others might find a muzzle guard useful to prevent rod-to-muzzle contact. Remember, the end goal is a clean, well-maintained shotgun that’s always ready for action.

Stay tuned in the article to understand how to put these tools into difference.

Cleaning the Barrel and Chamber

Now that we’ve identified the essential cleaning supplies for a Mossberg 500, let’s move onto the main part of the process: Cleaning the barrel and chamber.

To begin with, it’s critical to ensure that your shotgun is unloaded and safe to handle. Always double-check this before starting any cleaning regimen. Safety should never be compromised.

The first step in the cleaning process is to disassemble the shotgun. For a Mossberg 500, it involves removing the barrel from the receiver. Mossberg’s design makes it simple to do, even for beginners. However, be sure to refer to your user manual to ensure you’re doing it correctly.

Once the barrel is removed, grab your 12-gauge bore brush. Attach this to your cleaning rod and soak it in your cleaning solvent. This will help to loosen any debris, fouling, or built-up gunk. When that’s done, run the brush through the barrel several times, working from the breech end towards the muzzle. It’s also good practice to rotate the brush slightly as it moves through the barrel.

Following the brush, it’s time to put your slotted patch holder and cleaning patches to work. Soak a patch in cleaning solvent, fasten it to the patch holder, and run it through the barrel. Repeat until the patches come out clean. Be sure to replace the solvent-soaked patches regularly; a dirty patch won’t clean effectively.

Once the barrel is free of debris and residue, it’s time to lubricate the barrel. Applying a thin coat of gun oil not only ensures smooth operation but also protects against rust and corrosion.

The chamber, too, needs your attention. Using your 12-gauge jag and patch, repeat the same cleaning and lubrication procedure for the chamber.

Remember, and this is key, shotgun maintenance isn’t a one-time activity. It’s a crucial part of owning a firearm. Regular cleaning can significantly prolong the lifespan of your Mossberg 500, ensuring reliable performance for years.

Cleaning the Receiver and Action

Once we’ve tackled the barrel and chamber, it’s time to pay attention to the receiver and action of the Mossberg 500. Cleaning the receiver and action involves much of the same supplies we used to clean the barrel and chamber.

Start off by ensuring you have your cleaning solvent, cleaning patches, and slotted patch holder at the ready. Now let’s begin.

First, with your 12-gauge slotted patch holder attached to your cleaning rod, soak a cleaning patch in solvent. Push this soaked patch through the receiver using the rod. This is done to eliminate debris, dirt, and any residue. Repeat the process until a patch comes out clean on the opposite end. It means you’ve done an excellent job.

Next, we focus on the action. It’s a part requiring detailed attention due to its complexity and the number of small parts. To effectively clean it, use a soft-bristled brush soaked in solvent. Brush all parts of the action, emphasizing the moving parts where buildup often hides.

Ensure that you’re careful around small, delicate parts. Just remember – a gentle touch is necessary.

Just as we did with the barrel and chamber, it’s crucial to return lubrication to the receiver and action after cleaning. I can’t stress enough the importance of a good quality shotgun-specific gun oil for this task. Apply the oil generously, but be careful not to over do it. If it’s dripping, that’s too much.

Cleaning and maintaining your Mossberg 500 is an investment in its performance and longevity. Don’t underestimate the value of regular maintenance. We will be moving on to cleaning the trigger group and magazine tube in the next section. Stay tuned and keep your Mossberg 500 in peak performance condition.

Lubricating and Reassembling the Mossberg 500

After you’ve done a thorough cleaning, it’s time to move on to the next crucial step – lubricating and reassembling your Mossberg 500. This process ensures the smooth operation, durability, and longevity of your firearm.

First off, let’s talk about lubrication. It’s essential to apply gun oil to the necessary areas to keep your shotgun functioning flawlessly and prevent unwarranted wear and tear. For the Mossberg 500, consider using high-quality shotgun-specific gun oil. Apply a thin layer to the bolt, carrier, slide, and action bars. Remember, it’s not the amount, but the coverage that matters.

Now onto reassembling the Mossberg 500. Assembly should be a reversal of the disassembly process:

  • Slide the forend along the bars and back into the receiver
  • Replace the cartridge interrupter and cartridge stop
  • Fit the bolt and lifter back in
  • Reinsert the trigger assembly
  • Finally, place the barrel back onto the shotgun

Safety is paramount – and you must perform a function check after reassembly. The function check ensures that the shotgun has been reassembled correctly and is operating as it should. To check function, cycle the action and press the trigger. Listen for the click of the firing pin. Finally, cycle the action again.

Be sure to store the Mossberg 500 in a dry, cool and secure place. This will help ensure that it doesn’t accumulate rust, dust or other harmful substances. Also, store the shotgun unloaded and well out of the reach of children.

By carrying out regular maintenance, you’re not only prolonging the life of your Mossberg 500, but you’re also improving its functionality and your shooting accuracy. Remember that the key to good gun maintenance is consistency. Clean and maintain your gun after each use, and you should be able to rely on it for years to come.

Tips for Maintaining the Mossberg 500

Maintaining your Mossberg 500 shotgun consistently is pivotal for its longevity and performance. Like any other firearm, the Mossberg 500 requires both time and effort. Here, I’ll share some worthwhile tips I found throughout my years of experience.

Firstly, routine cleaning is vital. You should clean your shotgun after every use, removing grime, dirt, and leftover gunpowder. On top of that, even when you’re not using it, dust can accumulate. So, don’t neglect to clean it periodically.

Secondly, it’s crucial to care for the barrel properly. Cleaning your Mossberg 500’s barrel restricts buildup that might hurt accuracy over time. Using a cleaning rod with a proper-sized bore brush soaked in gun solvent effectively removes the debris from the interior of the barrel.

Next, utilize high-quality gun oil. This might sound like an obvious pointer, but you’d be surprised to know how many overlook it. While reassembling your shotgun, apply gun oil to reduce friction and prevent undue wear and tear.

Regular inspection should be a part of your Mossberg 500 maintenance routine as well. Watch out for any signs of damage, rust, or unusual wear while inspecting its parts.

Another thing to note – never force parts together when reassembling. If something’s not fitting right, take a moment to inspect why rather than forcing it and potentially causing more damage.

Lastly, safe storage is equally important. Store your Mossberg 500 in a dry and cool location to keep it in optimal shape. A gun safe is often the best choice. Remember, the proper storage of firearms can drastically prolong their life. Regular maintenance, including careful cleaning and proper storage, will keep your Mossberg 500 performing well for years to come.

Above all, the more attention you pay towards maintaining your Mossberg 500, the more reliably it’ll serve you. So, devote some time and effort: it’s certainly worthwhile, to have a firearm that’s always in its best condition.


So there you have it. We’ve walked through the steps of cleaning a Mossberg 500. Remember, it’s all about routine care and using the right tools and products. Don’t force parts together when reassembling and always inspect your gun regularly. Safe storage is also key. Keep these pointers in mind and your Mossberg 500 will serve you well for many years. After all, it’s not just about owning a shotgun, it’s about ensuring its longevity and top-notch performance. With the right care, your Mossberg 500 won’t let you down.

Frequently Asked Questions

How often should I clean my Mossberg 500 shotgun?

It is recommended to clean your Mossberg 500 shotgun after every use to prevent any build-up of dirt, debris, or moisture. This will ensure the proper functioning and longevity of your firearm.

How should I care for the barrel of my Mossberg 500 shotgun?

To care for the barrel of your Mossberg 500 shotgun, use a bore brush or a cleaning rod with patches soaked in a solvent specifically designed for gun cleaning. Run the brush or cleaning rod through the barrel multiple times to remove any residue or fouling.

What type of gun oil should I use during the reassembly of my Mossberg 500 shotgun?

It is important to use a high-quality gun oil specifically designed for firearms during the reassembly of your Mossberg 500 shotgun. Apply a thin layer of gun oil to the moving parts and metal surfaces to ensure smooth operation and prevent rust or corrosion.

How often should I inspect my Mossberg 500 shotgun?

It is recommended to regularly inspect your Mossberg 500 shotgun to identify any signs of wear, damage, or malfunction. This should be done at least once a month or after significant use to address any potential issues promptly.

Can I forcefully reassemble my Mossberg 500 shotgun if it doesn’t fit together easily?

No, you should never force the reassembly of your Mossberg 500 shotgun. If the parts don’t fit together easily, there may be an underlying problem that needs to be addressed. Forcing reassembly can cause damage to the firearm or compromise its safety and functionality.

How should I store my Mossberg 500 shotgun?

To safely store your Mossberg 500 shotgun, ensure it is unloaded and locked with a secure firearm storage device, such as a gun safe or lockable cabinet. Store the firearm in a cool, dry place away from excessive humidity or direct sunlight to prevent rust or damage.