Replacing the handguard on your DPMS LR-308 can significantly improve ergonomics, aesthetics, and even functionality. Whether you're looking for improved heat shielding, a more comfortable grip, or simply a cosmetic upgrade, this guide will walk you through the process step-by-step. We'll cover tool selection, common handguard types, and troubleshooting potential issues.
Understanding Your DPMS LR-308 Handguard
Before diving into the replacement, it's crucial to understand what type of handguard your DPMS LR-308 currently has. DPMS LR-308 rifles typically utilize either a standard quad-rail system or a free-floating handguard. Identifying this is the first step in selecting a compatible replacement. Examine your existing handguard closely; quad-rails have multiple Picatinny rails along their length, while free-floating handguards often have a smoother, sleeker profile and don't directly contact the barrel. Knowing this will help determine the type of replacement that will fit correctly.
Tools and Materials Needed
Before beginning the replacement, gather the necessary tools and materials. This will ensure a smooth and efficient process. You will likely need:
- Appropriate Handguard: Research compatible handguards for your DPMS LR-308 model. Ensure it's the correct size and mounting style. Many aftermarket options exist, offering various materials (aluminum, polymer), lengths, and rail configurations.
- Torque Wrench: Essential for tightening screws to the manufacturer's specifications, preventing damage to your rifle.
- Screwdrivers: You'll likely need both Phillips and flathead screwdrivers, depending on the screws used on your existing handguard.
- Allen Wrenches: Some handguards use Allen screws, so have the appropriate sizes on hand.
- Punch (optional): If any pins are involved in the handguard attachment, a punch might be needed for removal.
- Gunsmithing Mat: Protect your firearm and prevent scratches during the process.
- Gloves: Keep your hands clean and protect the finish on your rifle.
Step-by-Step Handguard Replacement
Safety First: Always ensure your firearm is unloaded and cleared before beginning any work. Point the muzzle in a safe direction at all times.
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Remove Existing Handguard: This process varies depending on the type of handguard installed. Consult your firearm's manual or search online for specific instructions based on your handguard model. Generally, this involves removing screws or pins securing the handguard to the barrel nut or upper receiver.
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Inspect the Barrel Nut: Once the handguard is removed, inspect the barrel nut (the large nut on the end of the barrel) for any damage or wear. Tighten if necessary.
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Install the New Handguard: Carefully align the new handguard with the barrel nut and upper receiver. Follow the manufacturer's instructions for your specific handguard model. This often involves securing it with screws or other fasteners.
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Tighten Screws: Use the torque wrench to tighten the screws according to the manufacturer's specifications. Over-tightening can damage your rifle.
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Test Fit: Once the handguard is installed, carefully test its fit and function, ensuring it is securely attached and doesn't interfere with any moving parts.
Troubleshooting Common Issues
- Handguard Doesn't Fit: Double-check that you purchased the correct handguard for your DPMS LR-308 model. Incorrect sizing is the most common cause of fitment problems.
- Stripped Screws: If a screw is stripped, try using a slightly larger screwdriver bit or carefully drilling it out. Be cautious not to damage the surrounding material.
- Difficult Removal: If the existing handguard is difficult to remove, apply a small amount of penetrating oil to help loosen any stubborn screws or connections.
Conclusion
Replacing your DPMS LR-308 handguard is a relatively straightforward process, but it's crucial to proceed with caution and precision. By following the steps outlined in this guide and referencing your specific handguard's instructions, you can successfully upgrade your rifle and improve its performance. Remember to prioritize safety throughout the entire process. If you are uncomfortable performing this task yourself, seek the assistance of a qualified gunsmith.
