Safety First
Unload and Inspect
The SCAR rifle, born from a need for modularity and exceptional performance, is a favorite among military and civilian shooters alike. Its robust design and ability to adapt to different calibers make it a highly sought-after firearm. But beyond its base functionality, SCAR owners often look for ways to customize their rifles. One common alteration is removing the factory flash hider. Whether it’s to install a different muzzle device, adapt the barrel for a suppressor, or simply refine the aesthetics, understanding how to remove your SCAR flash hider is a valuable skill. This guide will walk you through the process step-by-step, ensuring you can safely and effectively make this modification.
Safety should always be your top priority when working with firearms. Proper handling and following established safety protocols are essential to prevent accidents and ensure a positive experience. Before you even think about touching your SCAR, make certain that it is unloaded. Visually inspect the chamber, and use your hand to feel inside to be certain that it’s completely empty. Confirming that the firearm is unloaded is the foundational step to safe firearm handling. You should always perform this check every single time you begin working on any firearm. Once you’ve verified that the rifle is completely clear, you’re ready to proceed.
Protective Gear
Equipping yourself with the proper personal protective equipment is also a must. You will want to wear eye protection, such as safety glasses or shooting glasses, to protect against any potential debris that might dislodge during the removal process. Ear protection is also non-negotiable. The tools, while not creating ammunition explosions, create impact, which can be damaging to your eardrums. Using earplugs or earmuffs is highly recommended. Working in a well-lit space is also very helpful. It allows you to see what you are doing clearly. And, consider working in an uncluttered area so that you are able to focus on the task at hand.
Gathering Your Tools
Now that you have the safety basics covered, you need to gather the right tools and materials. The correct equipment will make the process far easier and greatly reduce the risk of damaging your rifle. Here’s a list of the essentials.
Vice and Vice Block
First, you will need a sturdy vice and a vice block specifically designed for the SCAR receiver. The SCAR receiver is not necessarily an easy piece to grip, and using a standard vice on its own can lead to damage. The SCAR-specific vice block provides a secure and safe way to hold the rifle while you work on the flash hider. This block will help to prevent any scratching or marring of the rifle’s finish and ensures that the rifle is held securely and steadily. Look for a block that is specifically designed for your model of SCAR.
Wrench or Specialized Tool
Next, you need a wrench of the correct size, or a specialized tool designed for removing the SCAR flash hider. A standard wrench may suffice, but the specialized tool will be designed to fit perfectly and provide the leverage you need. If you choose a standard wrench, make sure it fits the flats of the flash hider correctly. Using the incorrect wrench can result in damage to the flash hider or the barrel threads. Make sure the wrench fits tightly.
Penetrating Oil
Penetrating oil is your next essential. This is especially important if the flash hider hasn’t been removed in a while, or if it seems particularly stubborn. Penetrating oil, like PB Blaster or Kroil, works by seeping into the threads and breaking down any corrosion or rust that might be present. This significantly eases the removal process.
Cleaning Cloth
A rag or cleaning cloth will be needed to clean up any excess oil or debris. This ensures that everything looks clean as you progress through the project.
Torque Wrench
While not always necessary, a torque wrench can be useful if you plan to reinstall a new muzzle device later. A torque wrench allows you to tighten the device to the manufacturer’s specifications, which can be helpful. If you are replacing the flash hider with another muzzle device, knowing and following the proper torque specs is very important.
Heat Gun
Lastly, a heat gun can be considered if the flash hider is particularly difficult to remove. Be very careful when using a heat gun, as overheating can damage the barrel or finish.
Removing the Flash Hider: Step-by-Step
With your tools and safety gear ready, it’s time to begin the removal. Follow these steps carefully, and you will be well on your way to removing your SCAR flash hider.
Securing the Rifle
Start by securing your rifle in the vice. Use the vice block specifically designed for the SCAR receiver. Carefully insert the receiver into the block, and close the vice firmly. The rifle should be held tightly, but not so tight that you risk damaging the receiver. Make sure the barrel is level and that the muzzle is easily accessible. The stability is essential; a wobbling rifle is much harder to work with.
Applying Penetrating Oil
If the flash hider appears particularly stubborn, apply penetrating oil to the threads where the flash hider meets the barrel. Generously spray the oil around the joint, making sure it penetrates into the threads. The oil needs to work its magic. Allow the oil to sit for the amount of time recommended by the product manufacturer. Sometimes, waiting an hour or so will give the penetrating oil enough time to really do its thing. It may be necessary to reapply penetrating oil.
Applying Heat (If Necessary)
If, even after applying penetrating oil, the flash hider remains resistant, you may consider using a heat gun. Remember that heat should be used with caution. Use the heat gun to apply heat directly to the flash hider. Focus the heat on the flash hider and avoid heating the barrel directly. Apply heat in short bursts, moving the heat gun around the flash hider so that heat is distributed evenly. Do not overheat. Excessive heat could damage the barrel or the finish of the rifle. Apply heat only for about thirty seconds, give it a chance to penetrate the threads, and then try the wrench.
Loosening the Flash Hider
The time has come to loosen the flash hider. Place the wrench (or specialized tool) on the flash hider. Make sure the wrench fits correctly. Position yourself so that you can comfortably apply pressure. As you begin to loosen the flash hider, remember that most muzzle devices use conventional right-hand threads. This means you’ll turn the flash hider counter-clockwise to loosen it. Apply steady, even pressure to the wrench. A quick, jerky motion can slip and cause injury. Use a slow, steady application of force.
Removing the Flash Hider
If the flash hider is difficult to budge, apply more pressure. If you are having trouble, use a longer handle for leverage. If you still have a hard time with the flash hider, remove the rifle from the vice. Make sure you still have the gun locked and clear, and then try using your vice and tool on the floor so that you have something to brace against. You should eventually feel the flash hider begin to give way.
Once the flash hider starts to move, continue turning it counter-clockwise until it is completely unscrewed from the barrel. You should then be able to remove the flash hider by hand.
Cleaning and Inspection
Now that the flash hider has been removed, you should take the time to examine both the barrel threads and the flash hider itself. Check the barrel threads for any signs of damage, such as burrs, dents, or cross-threading. Damage of this kind could affect the performance of any new muzzle device you install. Inspect the flash hider for any visible damage, like dings or cracks.
Next, use your cleaning cloth or rag to wipe the barrel threads clean. This will remove any lingering oil or debris, creating a clean surface for installing a new muzzle device.
Reinstallation (Optional)
While this guide focuses on removal, let’s touch briefly on reinstallation, in case you choose to reinstall a new muzzle device in place of the original flash hider. You will want to thread the new muzzle device or flash hider onto the barrel. Make sure it is threaded on straight and that you are not cross-threading it. Tighten the device to the manufacturer’s recommended torque specifications using a torque wrench. If you are planning to reinstall, or to use a new device long-term, you can consider using thread locker, which will prevent the device from coming loose over time.
Troubleshooting Common Problems
Even with careful preparation and the right tools, you may encounter some issues during the removal process. Here are some common problems and some possible solutions.
Stubborn Flash Hider
One of the most common problems is a stubborn flash hider. If the flash hider refuses to budge, apply penetrating oil again. Give it more time to work its way into the threads. Using a heat gun can also help loosen things up. Remember, heat can be dangerous if used incorrectly.
Stripped Threads
If you accidentally strip the threads on the flash hider or the barrel, then you should consult with a qualified gunsmith. This is not a problem you can solve on your own. The gunsmith can repair the threads or replace the barrel if necessary.
Barrel Damage
If you notice any damage to the barrel, such as dents or cracks, then, too, you should consult with a gunsmith. Do not try to fire the rifle if you think the barrel is damaged. Damaged barrels can be dangerous, and should be assessed by a professional.
Conclusion
Removing your SCAR factory flash hider is a rewarding process, as it allows you to tailor your rifle to your specific needs and preferences. With careful planning, the correct tools, and a good understanding of the steps involved, you can safely and effectively complete this modification. Always prioritize safety, and if you are unsure at any point, it’s always best to seek assistance from a qualified gunsmith.
The information provided in this guide is for informational purposes only and does not constitute professional gunsmithing advice. Always follow the manufacturer’s instructions for your firearm. Safety is paramount. Should you be uncomfortable at any point of the process, or find yourself unsure about any of the steps, seek the help of a qualified gunsmith.
