Safety First: Your Paramount Concern
Safety First!
Before diving into any modifications to your firearm, safety must be your absolute priority. Gun safety is not a suggestion; it’s an absolute requirement. Failure to adhere to proper safety protocols can result in serious injury or worse.
The very first step is to positively confirm that your Mossberg 500 is unloaded. Open the action fully, and visually inspect the chamber and the magazine tube to ensure that no ammunition is present. Physically verify that the chamber is empty. Cycle the action a few times to be doubly sure. If there is any question, remove all ammunition from the vicinity.
Always point the muzzle of the shotgun in a safe direction. A safe direction is one where an accidental discharge would not cause injury or damage. In a home environment, this is often towards a solid wall or the ground. Be constantly mindful of your muzzle’s orientation.
Consider wearing safety glasses throughout the entire process to protect your eyes from flying debris. Working gloves are also advisable, as they improve your grip and reduce the chance of slipping while working with tools.
Work in a well-lit environment, preferably at a workbench or table. This will allow you to clearly see the parts and tools, minimizing the risk of mistakes.
Essential Tools and Materials
Gathering the right tools before you begin will make the job much easier and more efficient. Fortunately, changing the stock on a Mossberg 500 doesn’t require a specialized arsenal. Most of the tools you will need can be found in a basic home toolkit.
You’ll primarily need a set of screwdrivers. The specific sizes and types needed will depend on the bolt used on your Mossberg 500. A screwdriver set with a variety of flathead and Phillips head drivers is a good starting point. Inspect the existing stock bolt head to determine the correct screwdriver type and size. A good-quality screwdriver with a comfortable handle is recommended.
A wrench or socket set might be needed, particularly if you’re dealing with a newer model or if the existing bolt is stubborn. Again, the correct size will depend on the bolt. Having a general set with both metric and standard sizes will ensure you have the right tool on hand.
Consider having a punch and hammer readily available. They’re often useful for tapping out stubborn pins or parts. A brass punch is recommended to avoid damaging the firearm.
Of course, you will need your new stock. Whether it’s a fixed stock, a pistol grip, or an adjustable model, make sure it is compatible with your Mossberg 500 model. Check online reviews and forum discussions to ensure compatibility.
Some cleaning supplies might be beneficial. A clean work environment can keep the parts clean and free from debris. Gun oil or lubricant can be used for lubrication during the reassembly stage.
Prepare Your Workspace
Choose a clean and well-lit workspace to avoid any complications during the process. Using a workbench or sturdy table is preferable. It allows you to spread out the parts and have easy access to your tools.
Place a protective mat or towel on your work surface to safeguard the finish of your Mossberg 500 from scratches. This is particularly important if your firearm has a premium finish.
Removing the Existing Stock: Disassembly Unveiled
The process of removing the old stock is the crucial first step. Depending on your stock type, the procedure will vary slightly. This guide addresses the removal of both fixed stocks and pistol grips, so you’ll be covered regardless of your current configuration.
Taking Off the Fixed Stock
The Mossberg 500 primarily uses a fixed stock. This type is generally the simplest to remove and replace.
Locate the stock bolt. This bolt is usually found inside the receiver of the shotgun, which is typically inside the receiver or at the base of the stock, often recessed within the stock itself. The exact location may vary slightly based on the year of manufacture and any aftermarket modifications.
Unscrew the stock bolt. Use the appropriate screwdriver or wrench to loosen and remove the stock bolt. The bolt might be secured tightly, particularly on older models. If necessary, apply a small amount of penetrating oil to the bolt and let it sit for a short period to help loosen it. Be patient and avoid applying excessive force that could strip the bolt head or damage the receiver.
Once the stock bolt is completely removed, you can remove the old stock. Gently pull the stock away from the receiver, ensuring that it slides smoothly without catching on any internal components. If the stock is not coming off easily, double-check for any remaining screws or fasteners, and carefully inspect the area where the stock meets the receiver to ensure there aren’t any obstructions. Watch for parts that might become loose (like a recoil pad) and keep track of them. You may want to keep the bolt for reference if you’re unsure of the stock bolt thread size.
Disassembling the Pistol Grip
If you have a pistol grip installed, the procedure for removing it is somewhat simpler but still requires a degree of care.
Identify the pistol grip bolt. The location will vary, but it is usually found where the grip joins the receiver.
Unscrew the pistol grip bolt with the correct size screwdriver.
Once the bolt is completely removed, gently pull the grip away from the receiver.
Installing Your New Stock: Putting it Together
Now that you have removed the old stock, it’s time to install your new one. Take your time and work methodically.
Preparing the Receiver (Optional)
Before installing the new stock, you may choose to clean the receiver and any internal components with a gun cleaning solvent or a brush to remove any dirt, grit, or old lubricants. This is not strictly necessary, but it can contribute to the overall smooth operation of your shotgun. If you choose to clean, follow the manufacturer’s instructions for the cleaning products you use.
Installing the Fixed Stock
If you are installing a fixed stock, align the stock. Carefully align the new stock with the receiver. Make sure the stock fits flush against the receiver and is properly oriented.
Insert the stock bolt. Insert the stock bolt through the new stock and into the receiver. Ensure that the bolt aligns correctly with the threads in the receiver.
Tighten the stock bolt. Use the appropriate screwdriver or wrench to tighten the stock bolt. Tighten it until it is snug. Avoid over-tightening, as this can damage the stock or strip the threads. You don’t want it too loose, but you also don’t want to go so far that you risk damaging the gun.
Installing the Pistol Grip
To install a pistol grip, first align the grip. Carefully align the new pistol grip with the receiver. It should sit flush with the receiver and be properly positioned.
Insert the pistol grip bolt. Insert the grip bolt through the grip and into the receiver. Make sure that the bolt aligns with the threads correctly.
Tighten the pistol grip bolt. Use the appropriate screwdriver or wrench to tighten the grip bolt. Tighten until the grip feels secure. As with a fixed stock, avoid over-tightening.
Testing, Checking, and Final Inspections
After installing the new stock, some critical checks are necessary to ensure it works properly and is safe.
Conduct a function test
Test the firearm’s functionality. Cycle the action several times to make sure it moves smoothly. Check the trigger pull and the safety to make sure they are working correctly. Ensure that the pump action operates without binding or excessive resistance.
Perform a visual inspection
Check the new stock and the connections to make sure everything lines up properly. Make sure there aren’t any gaps or loose parts. The stock should be securely attached to the receiver.
Re-check the bolt
After firing a few rounds, go back and check the tightness of the stock bolt or pistol grip bolt. This is to ensure that everything stays secure under the recoil of the shotgun.
Troubleshooting Common Issues
Even with careful steps, you might run into a few minor problems. Here are some common troubleshooting tips:
The stock won’t align correctly:
If the stock does not fit right, first, check for any obstructions or debris in the receiver or on the stock. Sometimes, a small piece of material is keeping it from seating properly. Make sure the stock you purchased is compatible with your specific Mossberg 500 model. There are various models out there with slightly different dimensions.
The bolt won’t tighten:
If the bolt won’t tighten, it is possible you have stripped the threads on the receiver. If this happens, you may need to replace the receiver or consider using thread locker.
Other issues:
The stock may wobble slightly after installation. Some aftermarket stocks may require some adjustment. Inspect the bolt for tightness.
If the pump action is stiff, make sure the stock isn’t interfering with any of the internal components. Ensure that the action bars have sufficient clearance.
Wrapping Up: A Custom Mossberg 500
Congratulations! You’ve successfully changed the stock on your Mossberg 500. This is a simple modification that can have a big impact on how the shotgun feels and shoots. It’s a great way to personalize your firearm and make it fit your specific needs and preferences.
Always prioritize safety. Double-check that the gun is unloaded and that you are familiar with safe firearm handling practices.
Now, enjoy your newly customized Mossberg 500.
