Modifying your Mossberg 500 shotgun by changing its stock can significantly enhance its functionality and personalization. This comprehensive guide will lead you through the step-by-step process of stock replacement, providing detailed instructions and helpful tips to ensure a successful outcome. Whether you seek improved comfort, better ergonomics, or a customized aesthetic, this article will equip you with the knowledge and guidance to transform your Mossberg 500 shotgun into the perfect firearm for your specific needs.
Before embarking on the stock replacement process, gather the necessary tools and materials. You will require a set of punches, a hammer, a screwdriver, and a replacement stock compatible with your Mossberg 500 model. Additionally, ensure you have a safe and stable work area to conduct the modification.
Commence the stock replacement by unloading and ensuring the firearm is unloaded. Locate the stock bolt located at the rear of the receiver, holding the stock in place. Using the appropriate punch and hammer, carefully drive out the stock bolt, being mindful not to damage the threads. Once the stock bolt is removed, gently slide the old stock forward and off the receiver. Align the new stock over the receiver and insert the stock bolt through the holes on the stock and receiver. Drive the stock bolt back into place using the punch and hammer, tightening it securely but avoiding overtightening.
Securing the Stock with the Retaining Bolt
The retaining bolt is a crucial component that securely holds the stock in place on the Mossberg 500 shotgun. To properly install and tighten the retaining bolt, follow these detailed steps:
1. Align the Bolt and Stock
Align the retaining bolt with the corresponding holes in the stock and receiver. Ensure that the bolt passes through both the stock and receiver, guiding the stock into its correct position.
2. Insert Bolt into Receiver
Once aligned, carefully insert the retaining bolt into the receiver. Gently guide the bolt through the holes in the stock until it protrudes through the receiver on the opposite side.
3. Install Washer and Nut
Place the washer onto the protruding end of the retaining bolt. Then, thread the nut onto the bolt and tighten it using a wrench or socket. Ensure that the nut is adequately tightened to hold the stock firmly in place.
4. Torque Specifications
It is essential to torque the retaining bolt to the manufacturer’s specifications using a torque wrench. Refer to the Mossberg 500 user manual for the recommended torque setting for your specific shotgun model. Proper torque ensures that the stock is securely mounted and prevents overtightening, which could damage the stock or receiver.
| Mossberg 500 Model | Torque Setting |
|---|---|
| 500/505/505A | 30-35 ft-lbs |
| 590/590A1 | 40-45 ft-lbs |
| 590M/590A1M | 45-50 ft-lbs |
| 535/535A | 25-30 ft-lbs |
Installing the Buttstock
The buttstock of the Mossberg 500 is the component that you hold against your shoulder when firing. It can be replaced with a different stock to improve the ergonomics of the shotgun or to customize its appearance.
To install a new buttstock, you will need the following tools:
- Phillips head screwdriver
- Hex key
- Punch
Follow these steps to install the buttstock:
- Remove the old buttstock. Use the punch to drive out the roll pin that secures the stock to the receiver. Then, pull the stock straight back to remove it.
- Insert the new buttstock. Line up the new stock with the receiver and slide it into place.
- Secure the buttstock. Use the roll pin to secure the stock to the receiver.
- Tighten the screws. Use the Phillips head screwdriver to tighten the screws that secure the recoil pad to the stock.
- Adjust the length of pull. The length of pull is the distance from the trigger to the buttstock. It can be adjusted by moving the buttstock forward or backward on the receiver. To adjust the length of pull, loosen the hex screw that secures the stock to the receiver. Then, slide the stock forward or backward until it is at the desired length. Finally, tighten the hex screw.
The following table provides the specifications for the Mossberg 500 buttstock:
| Specification | Value |
|---|---|
| Length of pull | 13.5 inches |
| Drop at heel | 1.5 inches |
| Drop at comb | 1.25 inches |
| Weight | 1.5 pounds |
Verifying Proper Fit
Proper stock fit is crucial for comfortable and accurate shooting. Here’s a detailed guide to ensure a perfect fit:
1. Shoulder Fit
Stand with the gun between your legs. The butt of the stock should sit snugly against your shoulder. Check for any excessive movement or discomfort.
2. Cheek Weld
Raise the gun and rest the butt firmly against your shoulder. Your cheek should naturally align with the stock, providing a clear view through the sights.
3. Eye Relief
Look through the sights. The rear sight should be just within reach of your eye, without requiring you to strain or tilt your head.
4. Length of Pull
Measure the distance between the trigger and your trigger finger when the gun is shouldered. Subtract 1-2 inches to determine the proper length of pull for optimal comfort.
5. Grip Angle
The stock’s grip angle should fit naturally in your hand. It should allow for a comfortable and secure grip, without straining your wrist.
6. Cast
Cast refers to the angle of the stock relative to the direction of the barrel. It should be tailored to your shooting style and dominance.
7. Custom Fitting
If you experience any discomfort or shooting difficulties, consider consulting a professional gunsmith or stock fitting specialist. They can assess your fit and recommend modifications or custom stocks to optimize your comfort and accuracy. Here’s a table summarizing the key fit considerations:
| Fit Consideration | Description |
|---|---|
| Shoulder Fit | Buttstock should fit snugly against shoulder without movement |
| Cheek Weld | Cheek should naturally align with stock for clear sight picture |
| Eye Relief | Rear sight should be just within reach of eye |
| Length of Pull | Distance between trigger and trigger finger should be 1-2 inches less than natural reach |
| Grip Angle | Stock grip should fit naturally in hand for a secure hold |
| Cast | Stock angle relative to barrel should match shooting style and dominance |
How to Change Stocks on a Mossberg 500
Follow these steps to change the stock on your Mossberg 500 shotgun.
- Remove the buttstock bolt. The buttstock bolt is located on the underside of the buttstock. Rotate the bolt counterclockwise with a screwdriver or coin to detach it.
- Slide the buttstock upwards. Grip the buttstock firmly and slide it up and off the receiver.
- Insert the new buttstock. Align the new buttstock with the receiver and slide it down until it clicks into place.
- Tighten the buttstock bolt. Replace the buttstock bolt and rotate it clockwise with a screwdriver or coin to tighten it.
- Check the stock fit. Ensure the stock is securely attached and fits comfortably before firing the shotgun.
People Also Ask
How do I choose the right stock for my Mossberg 500?
When choosing a stock for your Mossberg 500, consider your shooting needs and preferences. Different stocks offer varying lengths, materials, and configurations to suit specific purposes and user requirements.
Can I install an adjustable stock on my Mossberg 500?
Yes, there are adjustable stocks available for the Mossberg 500. These stocks allow for customization of length and fit to optimize comfort and shooting performance.
What are some popular aftermarket stock options for the Mossberg 500?
Popular aftermarket stock options for the Mossberg 500 include Magpul stocks, Hogue stocks, and Boyd’s stocks. These brands offer a range of styles and features to enhance the look, feel, and functionality of your shotgun.
