Help identify the muzzle device in this vid?

[JDPhx501]

Whats the muzzle device that fits the rifle she's shooting?

Compensator or flash hider? It looks to my untrained eye like a compensator but could be wrong.

Not my video, but she's definitely one of the best female rifle shooters I've seen on youtube.

[daerror12]

I would say it is a AAC breakout.

http://www.rainierarms.com/?page=shop/detail&product_id=1912