Replacing the trigger assembly in your Mossberg 590 shotgun might seem daunting, but with the right tools and a methodical approach, it's a manageable task. This guide provides a step-by-step walkthrough for successfully replacing your Mossberg 590's metal trigger assembly, ensuring a smooth and safe process. We'll cover everything from necessary tools and safety precautions to the detailed replacement procedure.
Safety First: Essential Precautions
Before starting any firearm work, always prioritize safety. Follow these crucial steps:
- Unloaded Weapon: Verify the shotgun is completely unloaded. Visually inspect the chamber and magazine tube to confirm no cartridges are present. This is paramount.
- Safe Environment: Work in a well-lit, clutter-free area where you can focus without distractions.
- Eye and Hearing Protection: Wear safety glasses and hearing protection, even during seemingly low-risk steps.
- Proper Tools: Use only the appropriate tools; improvising can lead to damage or injury.
Tools You'll Need
Gathering the necessary tools beforehand ensures a smooth process. You'll need:
- Appropriate Screwdrivers: Phillips head screwdrivers of various sizes will likely be required. Check your Mossberg 590's manual for specific screw types.
- Punches (optional): Small punches can be helpful for dislodging stubborn pins.
- Hammer: A small ball-peen hammer might be necessary for gently tapping out pins.
- Gunsmithing Toolkit (recommended): A comprehensive gunsmithing toolkit often contains specialized tools that simplify the process.
- New Trigger Assembly: Ensure you have the correct replacement trigger assembly for your specific Mossberg 590 model. Ordering the wrong part can lead to significant issues.
- Gun Oil: A high-quality gun oil is essential for lubrication during reassembly.
- Cleaning Supplies: Having cleaning supplies on hand to remove any dirt or debris is always a good practice.
Step-by-Step Replacement Guide
This guide provides a general overview. Always consult your Mossberg 590's owner's manual for specific instructions relevant to your model. Variations may exist between different 590 variants.
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Disassembly: Carefully disassemble the shotgun's receiver, following the instructions in your owner's manual. This typically involves removing the stock, forend, and potentially other components. Take pictures as you go to aid in reassembly.
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Trigger Group Removal: Once the receiver is accessible, locate the trigger group. There are usually pins securing the trigger assembly to the receiver. Carefully remove these pins using the appropriate punches and hammer (if needed), taking care not to damage any parts.
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Replacing the Trigger Assembly: Carefully compare your old and new trigger assemblies, ensuring they match. Install the new trigger assembly, aligning all components precisely.
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Reassembly: Reverse the disassembly steps, carefully reinstalling the pins, forend, and stock. Ensure all components are securely fastened.
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Function Check: Before using your shotgun, thoroughly inspect the assembly and conduct a function check. Dry fire the shotgun (without ammunition) to ensure the trigger operates smoothly and the action cycles correctly.
Troubleshooting and Tips
- Stubborn Pins: If you encounter difficulty removing pins, use a penetrating oil to loosen them. Apply gentle pressure when tapping them out.
- Component Alignment: Pay close attention to the alignment of all components during reassembly. Improper alignment can lead to malfunctions.
- Professional Assistance: If you're unsure about any step, consult a qualified gunsmith. Attempting repairs beyond your skill level can cause serious damage or injury.
Conclusion
Replacing your Mossberg 590's metal trigger assembly requires precision and patience. By following these steps and prioritizing safety, you can successfully complete the replacement and restore your shotgun to proper working order. Remember to always consult your owner's manual and seek professional help if needed. Proper maintenance and regular cleaning are essential for the long-term functionality of your firearm.
