Does it’s job very well! - Seekins Precision AR ATC Muzzle Brake

I got this for a .308 rifle and it works great. Recoil impulse is greatly reduced but your muzzle blast back at about 45degrees is greatly increased (totally expected), no problem for the shooter but probably want to have your spotter/audience behind you.

I had a Bull barrel and wasn’t able to fit the self timing nut over the end of the unthreaded barrel so had to self time it using a crush washer but it works and looks great!