Excellent muzzle device for recoil and muzzle climb - VG6 Precision Epsilon 556 High Performance Muzzle Brake

Like everyone else already stated, does a good job with muzzle climb and recoil. When you install this, make sure the writing is facing towards the bottom of your barrel and not the top! The crush washer will allow you to tighten up to 180 degrees, if you feel you are over-tightening or not able to get it to line up correctly, loosen the Epsilon and then re-tighten. I had to tighten/loosen a few times because I was really pushing the crush washer to get it to line up correctly. I also put a drop of Rockset on the threads but I don't really think it is necessary with how tight mine went on.