A few brake manufacturers have these sleeves that go over a muzzle brake to send forward the side blast of the brake so its not as offensively loud to bystanders or dust on the ground when prone.

Is there a 51T type sleve or forwarder?  I know its made for a suppressor, but don'tsee a reason why a open short sleeve wouldn't be able to mount similarly.

Anyone make one for these fairly popular brakes - nice brakes, but are very loud with pistol configuration.

http://www.weaponoutfitters.com/one-size-qd-brake-shield-for-all18t-and-51t-aac-mounts.html

I have used one of the SSS brake shields on my brakeout. It works well and vents everything forward. My only complaint is that it allows a lot more carbon build up on the brakeout, which can interfere with mounting the suppressor as it starts adding material to the mount.

I didn't know that existed.  Now I need to try one.

Thank You !

FYI, those just thread on and don't utilize the ratchet. You have to use a set screw to keep them from backing off. So make sure the set screw is accessible.