Uh, the last time I checked, 'flash supressors' only reshape the signature, and don't actually mask it. Unless you live in BATF lala land where the laws of physics don't apply. Some are quite good at shaping the flash so as not to blind the shooter.
most muzzle brakes reshape flash to a degree. A ported barrel will result in flash visible from the ports, thereby reducing to a degree the flash from the end of the barrel.
Yeah, degrees are cool....
