You’ll need to use the new shims that most likely came with your new muzzle device. Now, you may have caught the caveat above when we say potentially. I live in an apartment so I'm quite familiar with the WECSOG method. At the end of the day, if it’s 34 foot-pounds (the measure of rotational torque) to get it properly aligned, it’s okay as long as it is properly aligned. This thing is a flash hider more than most flash hiders. Using a 1/16" hex wrench remove the flash suppressor set screw located forward of the base of the front sight. But when it comes to getting a new silencer for your firearm, there’s potentially one more step standing in the way of fulfilling all your suppressed shooting needs, and that’s how to remove your original muzzle device, and how to install a new one. Factory Colt flash hider uses a crush washer at just 15-20ftlbs torque. I just got a Ruger Gunsite Scout .308 rifle, and want to replace the factory flash hider with a muzzle brake. We repeat – DO NOT re-use the original crush washer. Then, un-thread the muzzle device until it is in proper alignment. Carbon and stainless steel are the most common and both work great. I took two pieces of wood and put one piece on top of the upper (against the flat top) and the other against the bottom of the upper (where the lower positions against). Shims most likely came with the device when you bought it. Another post on another thread in this forum confirms that the ATF says it's okay to remove the flash hider once the gun has been imported into the US since the barrel is over 16" on its own, without the flash hider attached. Then reinstall your muzzle device. Some reasonable amount of common sense is required but, if you don't have that, don't play with guns. The easiest way to spot a pin-and-weld job is to observe the circumference of the rear part of the muzzle device toward the shooter. Some silencers accept your original muzzle device; that information is usually on the manufacturer’s website if you’re questioning whether or not the one you have, or the one you’re interested in, does. It all depends on how secure the barrel is on the device. 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