Muzzle device question

[F4E Phantom]

I want to buy a featureless upper.
Are Noveske Flaming Pig or copies muzzle device considered
Flash hiders? I just want to be sure.
Thanks all

[Sparrow Dynamics]

As soon as you do a web search for Noveske Flaming Pig... the terms "flash suppressor" or "flash hider" in almost every link on the first page of results.