How To Replace A Mossberg 590 Barrel

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Post on Feb 08, 2025

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How To Replace a Mossberg 590 Barrel: A Step-by-Step Guide

Replacing the barrel on your Mossberg 590 shotgun can be a worthwhile endeavor, whether you're upgrading to a different length for hunting or sporting clays, or need to replace a damaged barrel. This guide provides a comprehensive, step-by-step walkthrough. Safety is paramount; always treat your firearm as if it were loaded.

Tools and Materials You'll Need

Before you begin, gather the necessary tools and materials:

• New Mossberg 590 barrel: Ensure it's compatible with your specific 590 model. Check the manufacturer's specifications.
• Gunsmith's wrench: This specialized wrench is crucial for properly securing and removing the barrel nut. A standard wrench may damage the barrel nut.
• Punch (brass or plastic is recommended): Used to assist in removing the barrel nut.
• Cleaning patches and solvent: For cleaning the receiver after disassembly and reassembly.
• Safety glasses: Protect your eyes from flying debris.
• Gloves: Protect your hands from scratches and potential damage.
• Firearm cleaning mat: To keep your work area organized and protected.

Step-by-Step Barrel Replacement

Disclaimer: The following instructions are for informational purposes only. Improper handling of firearms can lead to serious injury or death. If you are not comfortable performing this task, consult a qualified gunsmith.

Step 1: Unload and Inspect

1. Completely unload your Mossberg 590. Visually inspect the chamber and magazine tube to ensure it's completely empty.
2. Point the muzzle in a safe direction. Always keep the muzzle pointed in a safe direction, preferably downrange.

Step 2: Remove the Forend

1. Remove the forend: This usually involves unscrewing or sliding it off the magazine tube. Consult your Mossberg 590's owner's manual if you're unsure how to do this.

Step 3: Remove the Barrel Nut

1. Locate the barrel nut: This is usually located at the receiver end of the barrel.
2. Use the gunsmith's wrench: Carefully apply pressure to loosen the barrel nut. A brass or plastic punch can help to prevent damage to the nut. Turn counter-clockwise to loosen.
3. Remove the barrel nut: Once loosened, carefully remove the barrel nut by hand.

Step 4: Remove the Barrel

1. Remove the barrel: With the barrel nut removed, the barrel should slide out of the receiver. If it's difficult to remove, gently tap the receiver with the butt of the punch.

Step 5: Install the New Barrel

1. Insert the new barrel: Slide the new barrel into the receiver, ensuring it's properly aligned.
2. Install the barrel nut: Carefully screw the barrel nut onto the threads of the receiver. Use the gunsmith's wrench to tighten the nut securely. Do not overtighten.

Step 6: Reassemble the Forend

1. Replace the forend: Reattach the forend to the magazine tube, following the instructions in your owner's manual.

Step 7: Clean and Inspect

1. Clean your firearm: Use cleaning patches and solvent to clean any debris from the receiver.
2. Inspect your work: Visually check to ensure all parts are securely fastened and aligned.

Important Considerations

• Compatibility: Always verify the compatibility of the new barrel with your specific Mossberg 590 model.
• Torque Specifications: While it's important to tighten the barrel nut securely, over-tightening can damage the receiver or barrel.
• Professional Help: If you're unsure about any step of this process, consult a qualified gunsmith.

This guide aims to provide a comprehensive understanding of the barrel replacement process. Remember, firearm safety is paramount. If you have any questions or uncertainties, please seek professional assistance.