There are plenty of K31icon's with muzzle brakes at the local Military Silhouette shoot in Sacramento CA. Mine does not have one and it is not much fun shooting next to the people that use them. After 10 shots if you don't have a flinch you will. I try to get my firing point as far back as I can and not present a danger to others. I also wear plugs and muffs. I much prefer to be next to the M91/30 Mosins as the long barrel and no brake is not as noticeable.

Wineman