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Maximizing Capacity: A Comprehensive Guide to the Stevens 320 Extension Tube

Understanding Your Stevens 320 Shotgun

The Stevens 320

The Stevens 320 shotgun has earned a solid reputation among firearm enthusiasts. Known for its affordability, reliability, and straightforward design, it’s a popular choice for home defense, recreational shooting, and even some competitive disciplines. However, like many pump-action shotguns, the Stevens 320 comes standard with a magazine capacity that might feel limiting for some users. This is where the concept of an extension tube comes in – a modification that can significantly enhance the capabilities of your Stevens 320. This article serves as a comprehensive guide, exploring everything you need to know about Stevens 320 extension tubes, from the basics to the practical considerations, ensuring you can make informed decisions about upgrading your firearm.

Magazine Capacity Concerns

Before diving into modifications, it’s crucial to understand the platform itself. The Stevens 320 is typically a pump-action shotgun, a design prized for its simplicity and resilience. These shotguns are generally offered in various gauges, most commonly in twelve gauge and twenty gauge, allowing users to select the best option for their intended purpose. The action, operated by manually cycling the forend, reliably feeds rounds from the magazine into the chamber. The standard Stevens 320 configuration typically features a magazine capable of holding a certain number of shells – a capacity often perceived as potentially inadequate, especially in self-defense scenarios. This is where the drive to improve capacity becomes apparent. The desire to have more rounds readily available is the primary reason many shooters consider modifications like extension tubes.

Demystifying the Extension Tube

Defining the Upgrade

So, what precisely is an extension tube? In essence, it’s a tube, usually made from durable materials, that is designed to attach to the end of the shotgun’s existing magazine tube. Its primary function is simple: to extend the length of the magazine, thereby increasing the number of shells the shotgun can hold. Extension tubes are typically crafted from materials that can withstand the rigors of repeated firing. These materials include robust steel or lightweight aluminum, often treated to resist corrosion and ensure longevity.

Capacity and Manufacturers

A key consideration when selecting an extension tube is the desired increase in capacity. Tubes are manufactured to add various numbers of rounds. Aftermarket manufacturers provide a broad range of extension tubes tailored specifically for the Stevens 320, ensuring proper fit and function. When considering an extension tube, be sure to find one that is meant for the Stevens 320, and is a reliable make.

Unveiling the Benefits of an Extension Tube

Advantages for Shooters

The advantages of installing an extension tube are numerous, making it a worthwhile upgrade for many Stevens 320 owners. The most immediate and obvious benefit is, of course, increased capacity. Having more rounds readily available can be a critical advantage, particularly in self-defense scenarios. Whether you are in a situation where you need more shots, or just want to practice more without reloading as often, additional capacity is a significant benefit. Beyond increased firepower, the added weight and length of an extension tube can sometimes subtly alter the shotgun’s balance. For some shooters, this can lead to improved handling and a more natural point of aim. The added weight can also help to mitigate recoil, making the shotgun feel more manageable during rapid firing.

Choosing the Right Upgrade

Factors to Consider

Selecting the right extension tube involves careful consideration of several factors. First, determine the capacity you desire. This depends on your intended use, local laws, and any potential restrictions. Consider the overall length of the shotgun with the extension tube installed. Ensure this combined length complies with all applicable regulations. Next, consider the material. Steel tubes are generally more durable, but they can also add more weight. Aluminum tubes are lighter, which may be preferable for some users, but may also need more care. Research the reputation of different brands and read user reviews. Look for extension tubes that have a solid track record for reliability and ease of installation. Remember, the more you learn, the more likely you are to choose an upgrade that will meet all your requirements.

Installing Your Extension Tube: A Practical Guide

Safety First

Before beginning the installation process, it is paramount to prioritize safety. Ensure that the shotgun is completely unloaded. Triple-check that the chamber is empty and that no ammunition is present. Always follow safe gun handling practices throughout the procedure.

Gathering Tools

First, gather the necessary tools and materials. You’ll need the extension tube kit itself, which should include the tube, a spring, and possibly a new follower. You may need tools such as a wrench or a specialized tool that is made for the purpose of removing the magazine end cap. A vice is helpful for securely holding the shotgun during disassembly and reassembly. Consider having some thread locker, such as Loctite, on hand to ensure the extension tube remains securely attached. Finally, have some cleaning supplies available to prepare the threads properly.

Installation Steps

Now, begin the installation. Start by removing the existing magazine end cap. This may require some force and the use of the correct tool. Once the end cap is removed, carefully remove the magazine spring and the follower (the small part that pushes the shells toward the chamber). Next, thoroughly clean the threads on both the receiver (the part of the shotgun that houses the magazine tube) and the extension tube itself. A clean and well-prepared thread will allow the tube to thread correctly. After the threads are cleaned, carefully thread the extension tube onto the receiver. Use a wrench to tighten the tube firmly, but avoid overtightening, as this could damage the threads. If recommended by the manufacturer, apply thread locker to the threads before tightening. Once the tube is securely attached, reassemble the shotgun, ensuring the spring and follower are correctly positioned. Once the extension tube is fully installed, it is imperative to test the function of the shotgun. Cycle several rounds through the magazine to verify that they feed smoothly into the chamber.

Remember, if at any point you are not comfortable with the process, consult with a qualified gunsmith.

Maintenance and Care for Long-Lasting Performance

Ongoing Care

Once the extension tube is installed, regular maintenance is essential to ensure it functions reliably. After each shooting session, clean the extension tube, removing any powder residue or debris. Periodically check the tightness of the tube. Over time, the tube may loosen due to recoil and vibration. Inspect the extension tube for signs of corrosion or damage, which could impact its function. Proper cleaning and care extend the lifespan of the component.

Addressing Potential Issues

Troubleshooting Guide

While generally reliable, extension tubes can sometimes encounter issues. If you experience feeding problems, such as jams or failures to feed, first check the spring. It’s possible that the spring has become worn or damaged. The spring might also be the wrong length or type, which impacts its functionality. Inspecting the follower is also a good idea, as that could also be the source of the problem. In the unlikely event of misfires, inspect your ammo. The issues might be with the ammunition and not the tube itself. If you experience difficulty with disassembly or reassembly, consult the manufacturer’s instructions or seek assistance from a gunsmith. Understanding and addressing these potential issues helps ensure the ongoing safe and reliable operation of the modified shotgun.

Navigating Legal Considerations

Understanding Gun Laws

Before making any modifications to your Stevens 320, it is crucial to understand the legal implications. Gun laws vary significantly from place to place, so be sure to research your local and state regulations. Be aware of any restrictions on magazine capacity in your area. Also consider the overall length of the firearm with the extension tube installed. There are federal regulations that may apply in your area. Failure to comply with these regulations can have serious consequences. If you are unsure about the legality of any modification, consult with a qualified legal professional.

Final Thoughts

Installing a Stevens 320 extension tube can significantly enhance the capabilities of your shotgun, offering increased magazine capacity and potentially improving handling characteristics. Remember, safety must always be the top priority. By understanding the basics, carefully choosing the right extension tube, following the installation instructions, and adhering to all safety and legal guidelines, you can effectively upgrade your Stevens 320. Take time to compare options to be sure you are making the best choice for your needs.

Useful Resources

For further information, consider exploring the following resources:

  • Manufacturer websites for popular extension tube brands.
  • Online forums and gun communities.
  • Reputable online retailers for firearm accessories.

By taking the time to thoroughly research these resources, you can increase your knowledge and enhance your safety. This will ensure you get the most out of your upgrade.

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