M1A Muzzle Brake

[charliedontsurf334]

Does anyone know what kind of muzzle brake this is?

http://www.facebook.com/profile.php?id=636677894#!/photo.php?pid=6285827&o=all&op=1&view=all&subj=2232185378&aid=-1&id=591857523

[rp55]

Looks like an ASI 3 port maxi Brake. Accuracy Systems. Way down at the bottom of the page.