152 YUP! (twitter.com) posted 3 months ago by Windows8866 3 months ago by Windows8866 +152 / -0 15 comments share 15 comments share save hide report block hide replies
It's not clear what brand it is, but it's definitely a muzzle brake.
Looks sort of like a Surefire, but the Surefire model like this has two vents to the side, not one.