How often? Never. You should replace the crush washer if you remove the flash hider.
Even if a muzzle brake did need cleaning (I've never run across one that did, but you never know) it still wouldn't need to be removed to be cleaned.Brakes, depending on the make/model, might require periodical cleaning.
Even if a muzzle brake did need cleaning (I've never run across one that did, but you never know) it still wouldn't need to be removed to be cleaned.
Wouldn't have to, but you could......and should. If you experience any carbon build-up (which will definitely have an adverse effect on accuracy). The best way to do a complete clean job on a muzzle brake is to remove it.![]()