The Mossberg 500 and 590 shotguns are renowned for their reliability and versatility. A key component contributing to this is the action slide tube assembly. Understanding this assembly, especially the 7 3/4" version, is crucial for proper maintenance, troubleshooting, and potential upgrades. This guide delves into the intricacies of the Mossberg action slide tube assembly, focusing on the 7 3/4" variant and offering insights for both novice and experienced users.
Understanding the Mossberg Action Slide Tube Assembly
The action slide tube assembly is a vital part of the Mossberg pump-action mechanism. It's responsible for several critical functions:
- Shell Feeding: The tube holds the shells and guides them into the receiver for loading.
- Action Cycling: The assembly interacts with the bolt and receiver, ensuring smooth cycling during operation.
- Shell Ejection: Proper functioning ensures reliable ejection of spent shells.
The 7 3/4" version specifically indicates the length of the tube, directly impacting the shotgun's capacity. Longer tubes accommodate more shells. Understanding the specific length of your assembly is essential for correct part selection during maintenance or repairs.
Components of the 7 3/4" Action Slide Tube Assembly
The Mossberg 7 3/4" action slide tube assembly typically includes the following components:
- Tube: The main cylindrical component holding the shells. This is the 7 3/4" section.
- Follower: A spring-loaded component that pushes shells forward. Essential for reliable feeding.
- Spring: Provides the necessary force for the follower to push shells. A weak spring leads to feeding issues.
- Tube Cap: Secures the end of the tube, preventing shells from falling out.
- Action Slide Bar: This component connects to the pump and interacts with the bolt to cycle the action. The bar slides within the tube.
Maintenance and Troubleshooting Your Mossberg Action Slide Tube Assembly
Regular maintenance ensures the smooth operation of your shotgun. Here's a step-by-step guide:
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Disassembly: Carefully disassemble the assembly following the manufacturer's instructions. Consult your owner's manual for detailed guidance. Improper disassembly can lead to damage.
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Cleaning: Clean the tube thoroughly, removing any dirt, debris, or residue. Use a suitable cleaning solvent and brush. Pay close attention to the follower and spring.
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Inspection: Inspect all components for wear and tear. Replace any damaged or worn parts. A broken follower or weak spring can significantly impact functionality.
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Lubrication: Apply a light coat of gun oil to all moving parts to ensure smooth operation. Avoid over-lubrication, which can attract dirt and debris.
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Reassembly: Reassemble the components in the correct order. Refer to your owner's manual or a detailed parts diagram. Incorrect reassembly can lead to malfunction.
Troubleshooting Common Issues:
Problem | Possible Cause | Solution |
---|---|---|
Shells fail to feed | Worn follower, weak spring, dirty tube | Replace follower and/or spring; clean tube |
Shells jam | Obstruction in tube, dirty parts | Clean tube and components; inspect for damage |
Action feels stiff | Lack of lubrication, dirt, or worn components | Lubricate; clean; replace worn parts |
Tube cap won't stay on | Damaged tube cap, worn threads on tube | Replace tube cap; potentially replace tube |
Upgrading Your Mossberg Action Slide Tube Assembly
While the standard 7 3/4" tube works for many applications, some shooters might prefer modifications. Consider these upgrades:
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Extended Tubes: For increased capacity, consider upgrading to an extended tube. Ensure compatibility with your specific Mossberg model.
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Enhanced Followers: Aftermarket followers often feature improved materials or designs for enhanced reliability.
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High-Capacity Springs: Stronger springs ensure consistent feeding, especially with heavier loads.
Important Note: Always ensure any upgrades are compatible with your specific Mossberg shotgun model. Using incompatible parts can lead to malfunctions or damage.
Conclusion: Maintaining Your Mossberg 7 3/4" Action Slide Tube Assembly
The Mossberg action slide tube assembly, specifically the 7 3/4" version, is a crucial part of your shotgun's function. Regular maintenance, proper cleaning, and understanding potential problems are essential for reliable performance. This guide provides a foundation for maintaining and troubleshooting your Mossberg 500/590 shotgun's action slide tube assembly, ultimately leading to a safer and more enjoyable shooting experience. Remember to consult your owner's manual and consider seeking professional help if you are unsure about any repair or maintenance procedures.