The Mossberg 500 is a legendary pump-action shotgun, renowned for its reliability, versatility, and affordability. At the heart of this iconic firearm lies the action tube – a seemingly simple component that plays a crucial role in the gun's function and overall performance. Understanding your Mossberg 500 action tube is key to proper maintenance, troubleshooting, and even customizing your shotgun. This article will delve into the intricacies of the Mossberg 500 action tube, covering its function, common issues, and how to maintain it.
Understanding the Mossberg 500 Action Tube's Function
The action tube, located beneath the barrel, is the backbone of the Mossberg 500's pump-action mechanism. It's a cylindrical metal component that houses the shells during loading and firing. Its primary functions include:
- Shell Storage: The action tube securely holds the shotgun shells, feeding them one at a time into the chamber. The capacity of the tube varies depending on the model and barrel length.
- Shell Feeding: Through a carefully engineered system of interaction with the pump and bolt, the action tube ensures smooth, reliable feeding of shells.
- Mechanism Support: It provides a rigid framework for the pump action mechanism, facilitating the smooth cycling of the gun.
The action tube's interaction with other components, like the magazine tube cap, follower, and spring, is crucial for the shotgun's proper operation. Any issue with the tube can lead to malfunction.
Internal Components and Their Role
The action tube itself isn't just a hollow cylinder. Several internal components contribute to its function:
- Follower: This component rides on top of the shells within the tube, pushing them forward as they are loaded. A malfunctioning follower can cause feeding issues.
- Spring: This spring pushes the follower up, ensuring consistent shell feeding. A weak spring can lead to unreliable feeding.
- Magazine Tube Cap: This secures the front end of the tube, preventing shells from falling out.
Common Mossberg 500 Action Tube Problems and Solutions
While the Mossberg 500 is known for its durability, problems with the action tube can occur. Some common issues include:
- Feeding Problems: This can range from shells jamming to complete failure to feed. Causes include a bent or damaged follower, a weak spring, or debris inside the tube. Solution: Inspect the follower and spring for damage. Clean the tube thoroughly.
- Tube Damage: The action tube can become dented or otherwise damaged from drops or rough handling. This can interfere with smooth operation. Solution: In most cases, a damaged tube requires replacement.
- Loose Magazine Cap: A loose magazine cap can lead to shells falling out. Solution: Tighten the cap, or replace it if necessary.
Troubleshooting Steps
If you're experiencing issues, try these steps before seeking professional help:
- Thorough Cleaning: Disassemble the shotgun and thoroughly clean the action tube and all related components.
- Inspection: Carefully inspect the follower, spring, and tube itself for damage, bends, or obstructions.
- Part Replacement: If you find damage, replace the faulty part(s). Mossberg parts are readily available.
Maintaining Your Mossberg 500 Action Tube
Regular maintenance is key to keeping your Mossberg 500 running smoothly. Here’s what you should do:
- Regular Cleaning: Clean the action tube after each use, removing any dirt, debris, or residue. Use a suitable gun cleaning solvent and patches.
- Lubrication: Lubricate the action tube and surrounding components with gun oil. This ensures smooth operation and reduces wear.
- Inspection: Regularly inspect the action tube, follower, and spring for wear and tear. Replace any damaged components promptly.
Upgrading Your Mossberg 500 Action Tube
Some aftermarket companies offer extended action tubes for increased capacity. However, it is crucial to ensure any replacement tube is compatible with your specific Mossberg 500 model. Improperly installed parts can compromise the firearm's safety and reliability.
Conclusion: The Importance of the Mossberg 500 Action Tube
The Mossberg 500 action tube, though a seemingly simple part, is essential to the shotgun's reliable operation. Understanding its function, potential problems, and maintenance requirements is vital for any Mossberg 500 owner. By performing regular maintenance and addressing issues promptly, you can ensure your shotgun remains a reliable and effective tool for years to come. Remember to always consult your owner's manual and seek professional help if you are unsure about any repair or maintenance procedures.