This in-depth guide explores the Mossberg action slide tube assembly, focusing on the 7, 3, and 5 models. We'll delve into its function, common issues, disassembly, reassembly, and troubleshooting tips. Understanding this critical component is crucial for maintaining the reliability and safety of your Mossberg firearm.
Understanding the Mossberg Action Slide Tube Assembly
The action slide tube assembly is a key part of the Mossberg shotgun's operating mechanism. It's responsible for the smooth cycling of the action, ensuring reliable feeding and ejection of shells. This assembly differs slightly across the 7, 3, and 5 models, though the core function remains consistent. The assembly typically includes the tube itself, a spring, and potentially a follower depending on the model and configuration. These components work together to facilitate the extraction and loading of shells. The specific design and materials may vary based on the shotgun's gauge and model year.
Key Components of the Assembly:
- Action Slide Tube: This is the main cylindrical component which houses the shells. Its internal dimensions are precisely machined to accommodate the correct gauge of ammunition.
- Spring: This powerful spring provides the necessary force to push the shells forward, ensuring consistent feeding. Spring fatigue is a common cause of malfunctions.
- Follower (some models): The follower is a component that rides on top of the shells within the tube, interacting with the action to facilitate the loading process. Its role is to keep the shells aligned and prevent jamming.
Common Issues and Troubleshooting
Several issues can arise with the Mossberg action slide tube assembly, leading to malfunctions such as feeding problems, jamming, or failure to eject spent shells. These issues often stem from wear, damage, or incorrect assembly.
Common Problems:
- Weak or Broken Spring: A weak spring can lead to unreliable feeding. The spring should provide firm resistance when compressed. A broken spring renders the shotgun inoperable.
- Damaged or Bent Tube: Damage to the tube, such as bending or internal scoring, can interfere with the smooth operation of the follower and shell feeding.
- Dirty or Clogged Tube: Dirt, debris, and residue can impede the smooth movement of shells within the tube.
- Incorrect Assembly: Improper reassembly after cleaning or repairs can result in malfunctions.
Troubleshooting Steps:
- Inspection: Carefully inspect the entire assembly for any signs of damage, wear, or debris.
- Cleaning: Thoroughly clean the tube and components, removing any dirt or residue. Use a suitable cleaning solvent and a brush designed for this purpose.
- Spring Test: Check the spring's strength. If it's weak or broken, replace it.
- Tube Alignment: Ensure the tube is properly aligned and seated within the receiver.
- Reassembly: Carefully reassemble the components, referring to a diagram or manual if necessary.
Disassembly and Reassembly
While Mossberg provides manuals for their shotguns, visual instructions are often helpful. We strongly recommend searching online for videos specifically demonstrating the disassembly and reassembly process for your specific Mossberg model (7, 3, or 5). These videos provide a clear visual guide, reducing the risk of error.
Caution: Always unload the shotgun and ensure it's clear of ammunition before attempting any disassembly or cleaning. Improper handling can lead to serious injury.
Maintaining Your Action Slide Tube Assembly
Regular cleaning and lubrication are essential to maintaining the smooth operation of your Mossberg action slide tube assembly and the entire firearm.
Maintenance Tips:
- Regular Cleaning: Clean the tube and all components after each use, or at least after every shooting session.
- Lubrication: Apply a light coat of gun oil to the moving parts to reduce friction and wear.
- Inspection: Regularly inspect the assembly for any signs of wear, damage, or other issues.
- Replacement: Replace worn or damaged components promptly.
Conclusion: Ensuring Reliable Performance
The Mossberg action slide tube assembly is a vital part of your shotgun's functionality. By understanding its operation, performing regular maintenance, and addressing any issues promptly, you can ensure the reliable performance and longevity of your firearm. Remember safety first, and always consult your owner's manual for specific instructions. If you are not comfortable with disassembly and reassembly, seek the assistance of a qualified gunsmith.