Made by Atlantic Firearms MFG.
14-1 LH Threads
7.62 x 39mm.
These are modeled after the Original Polish Beryl Rifle's muzzle brake. These work well with the Polish WBP firearms, and are made in the U.S.A. So they also count as a US 922r part.
Ports are at approximately 1 o'clock, 4 o'clock, and 8 o'clock (from shooter's perspective).
Great product. Fast shipping and really finishes off the rifle nice.
Love it- smooth recoil on my Ak
I destroyed the Beryl style brake that came with my Beryl 7.62 while removing it. It was caked in Red thread locker to hold it in place (I assume it was glued in place so they could time it right). After I confirmed that the 14x1lh threads were not concentric, I removed the suppressor mount I had purchased, bought a new one of these, and caked the threads with loctite to align it. I couldn’t get it attached tightly enough to mount it without thread locker.