Planning Your Handguard Upgrade
Before you even think about reaching for a wrench, the initial planning stages are crucial. It’s about more than just picking a handguard that *looks* cool; it’s about selecting one that best suits your needs and ensures compatibility with your existing rifle setup. Taking the time to prepare will make the entire replacement process much smoother and more rewarding.
First, you need a solid understanding of your current handguard situation. This begins with **assessing your current handguard**.
Identify the Type
The first thing to determine is the type of handguard currently installed on your LR-308. Is it a free-float design, where the handguard is not in contact with the barrel, or is it a drop-in style where it might interact with the delta ring and front sight base? Identifying this will inform the tools and techniques you’ll need for removal and installation.
Measure the Length
Next, grab a measuring tape and measure the length of your existing handguard. Common lengths include carbine, mid-length, and rifle. Knowing this dimension is critical because you’ll need to ensure your replacement handguard matches or complements your barrel length and desired aesthetic. A mismatched handguard will not only look awkward, but could also impact functionality.
Inspect the Attachment Method
Observe how your handguard is attached. Does it use a barrel nut? A delta ring and a spring-loaded handguard cap? Knowing how your current handguard attaches will provide insights into the removal process for your LR-308 handguard replacement.
With a clear picture of your current setup, you can then move on to selecting a new handguard. This is where the fun begins.
Compatibility is Key
Compatibility with the DPMS LR-308 platform is paramount. Most handguards are designed specifically for this receiver type, but it’s always wise to double-check the manufacturer’s specifications to ensure a perfect fit. Verify that the handguard’s mounting system matches your barrel nut and receiver threads.
Material Matters
The handguard material significantly influences weight, durability, and heat dissipation. Aluminum is the most common choice, offering an excellent balance of these qualities and a robust platform for mounting accessories. Carbon fiber provides exceptional lightness and superior heat resistance. Polymer handguards are often a more budget-friendly option, although they may not possess the same level of durability as metal alternatives. Consider your intended use and budget when choosing the material.
Choosing a Mounting System
The next decision involves the mounting system:
Picatinny Rails
Picatinny rails provide unparalleled versatility. They are a military-grade standard for attaching a wide range of accessories, like optics, lights, and lasers. However, they are often heavier due to the extra material.
M-LOK
M-LOK offers a modular approach, allowing you to attach accessories directly to the handguard at various points. It is generally lighter and more streamlined than Picatinny rails.
KeyMod
KeyMod is another modular system. It offers similar functionality to M-LOK but with a slightly different attachment method. The choice between these two often comes down to personal preference.
Ergonomics and Features
Beyond the technical specifications, consider the ergonomics and features that will best serve your shooting style. Think about the grip diameter: does it feel comfortable in your hand? Do you prefer a round or a more angular profile? Look for integrated features like QD sling attachment points or hand stops, which can enhance comfort and improve control.
Gathering the Right Tools and Materials
Proper preparation extends beyond research; it also encompasses gathering the essential tools and supplies. Having everything you need at hand will make the replacement process much more efficient and minimize frustration. Here’s a list of essential items:
Handguard Removal Tools
Armorer’s Wrench
If your handguard is a free-float type, an armorer’s wrench is indispensable for removing and installing the barrel nut. These wrenches are specifically designed to fit the lugs of AR-15 and LR-308 barrel nuts.
Punch and Hammer
If your handguard uses a delta ring, you might need a roll pin punch and a small hammer to assist in removing and installing the handguard cap.
Vice and Vice Blocks
A sturdy vice and vice blocks can provide a stable platform for your upper receiver during the handguard replacement. This is highly recommended for safety and to prevent damage to your receiver.
Torque Wrench
A torque wrench is essential for properly tightening the barrel nut to the manufacturer’s recommended specifications. This ensures a secure fit and optimal barrel performance.
Cleaning Supplies
Have a bottle of solvent and some clean patches readily available. It is often necessary to clean threads or any other areas that may come into contact with new components.
Anti-Seize Compound
Applying anti-seize compound to the barrel nut threads before installation can prevent corrosion and make future removal easier.
Loctite (Optional)
Consider using Loctite on specific components, but always refer to the manufacturer’s instructions for your particular handguard.
Safety Glasses
Safety glasses are non-negotiable. Protecting your eyes from debris and any accidental impacts is paramount.
The Hands-On: Replacing Your Handguard
With all the preparation complete, you’re ready to start the actual *DPMS LR-308 handguard replacement*. Remember to work in a clean, well-lit area and take your time. Rushing can lead to mistakes and potential damage.
First, and foremost, **safety should always be your top priority.** Ensure the firearm is completely unloaded. Visually and physically inspect the chamber and magazine well to verify that there are no rounds present.
Removing the Old Handguard
For Free-Float Handguards
Remove any accessories attached to the handguard, such as optics, lights, or grips.
Using the armorer’s wrench, carefully loosen and then completely remove the barrel nut. Apply steady, even pressure, avoiding any sudden jerks that could strip the threads. If the barrel nut is proving difficult to remove, consider applying penetrating oil and allowing it to soak for a while.
Once the barrel nut is removed, you should be able to slide the old handguard off the barrel.
For Drop-In Handguards (Delta Ring System)
Start by removing any accessories attached to the handguard.
Depress the delta ring. This can usually be achieved by hand or with a delta ring tool if needed.
Once the delta ring is depressed, you can slide the handguard off. Be careful not to scratch or damage the upper receiver as you remove the handguard.
Preparing the Upper Receiver
Clean the barrel nut threads. Use a brush and solvent to remove any grease, oil, or debris.
Apply anti-seize compound to the barrel nut threads. This will prevent the threads from seizing up and make it easier to remove the barrel nut in the future.
Installing the New Handguard
For Free-Float Handguards
Install the new barrel nut. Be sure to align the handguard with the barrel nut.
Use your armorer’s wrench to tighten the barrel nut to the manufacturer’s recommended torque specifications. Use a torque wrench to ensure accuracy. Overtightening or undertightening could cause issues.
Once the barrel nut is properly torqued, you can secure the handguard to the barrel nut. The exact method will depend on the specific handguard design (e.g., screws, clamps). Follow the manufacturer’s instructions carefully.
For Drop-In Handguards (Delta Ring System)
Insert the new handguard, aligning it with the delta ring and handguard cap.
Re-install the delta ring. This might require some maneuvering to ensure it snaps back into place.
Reassembling and Checking the Firearm
Re-install any accessories that were previously mounted on the handguard.
Perform a function check. Ensure the bolt cycles smoothly and that the firearm functions correctly. Safely test the firearm on a shooting range after a successful handguard replacement.
Important Considerations for a Successful Upgrade
Proper torque specifications are crucial. Overtightening or undertightening the barrel nut can lead to accuracy problems or, in extreme cases, even damage the rifle. Always consult the manufacturer’s instructions for the correct torque values for your barrel nut and handguard.
Proper alignment is another essential factor. Make sure that your handguard is perfectly aligned with the upper receiver and the barrel. Use a level to ensure the handguard is straight. A misaligned handguard will not only look unprofessional, but it can also interfere with accessory mounting and potentially affect accuracy.
Sometimes, you might encounter issues. For example, the handguard might not fit correctly, or the barrel nut may be seized. If you run into such problems, don’t force anything. Review the manufacturer’s instructions, search online forums for similar issues, or consult a gunsmith if necessary.
Always be aware of any local and federal regulations regarding firearm modifications. Ensure that your *DPMS LR-308 handguard replacement* complies with all applicable laws.
Wrapping Up Your Project
Congratulations! You’ve successfully navigated the process of replacing your *DPMS LR-308 handguard*. By following these steps, you’ve not only upgraded the look of your rifle but also enhanced its functionality and versatility. From improved ergonomics to more options for mounting accessories, your LR-308 is now better equipped to meet your needs.
Now, go ahead and enjoy the transformation. Experiment with new accessories, and personalize your rifle to create a tool that is both functional and uniquely yours.
