karljebert
Answered
it has a factory-installed muzzle brake that can be removed by CAREFULLY grinding it off through the welded portion. If it's a classic lefty-loosey righty-tighty thread, it's a 5/8-24 thread and you can put any .30 caliber brake on it. If it's reverse-threaded, you will have to make sure you buy muzzle devices that specifically say they're for a 7.62 caliber AK.
