Hello!
Are crush washer necessary for flash hiders? Why is there a crush washer on every AR? Is just to line up the Flash hider/Muzzle brake? Or does it serve a special purpose?
Stephen Answered question July 3, 2022
It depends on the flash hider. Some do, some don’t. If in doubt, consult the manufacturer’s instructions.
Generally speaking, a crush washer is used to ensure a tight fit between the flash hider and barrel, which minimizes vibration and thus reduces noise and muzzle flash. However, not all flash hiders require a crush washer for proper installation. Consult your firearm’s manufacturer to be sure.
Natalee Answered question July 3, 2022