Muzzle brakes?

[Rich Coyle]

I am pretty sure I purchased these brakes from someone here. Is there anyone who can tell me what brand they are and what they are called? The large barrel is .870" and the other is .650".

 

[Jud96]

I don't know about the larger barrel, but the 0.650 barrel looks like a Muzzle Brakes and More (MBM) brake.