BUR #17668 has been approved by @nonamethanks.
create alias muzzle_brake -> muzzle_device
create alias flash_hider -> muzzle_device
create alias flash_suppressor -> muzzle_device
Wikipedia says:
A flash suppressor, also known as a flash guard, flash eliminator, flash hider, or flash cone, is a muzzle device attached to the muzzle of a rifle...Muzzle brake or recoil compensator is a device connected to, or a feature integral to the construction of, the muzzle or barrel of a firearm or cannon...
There are no distinct features from three specific types of barrel attachments for longer guns, especially when artistic details are not adequate. I will not include compensator because it has distinct shape and notably large (for handguns).
Updated