Witt Machine and Tool makes the best one I've tried.

It's a muzzle break with a screw on compensator.

It's made my .308 much, much, more comfortable to shoot, sound wise. Hunting hogs at night, I used to rattle people's windows at 2am, a mile away... But after installing this, I know for a fact the sound is directed downrange and behind the muzzle, especially with some distance, it's not near what the report would be without.

https://www.wittmachine.net/sme-sound-mitigation-equipment-slimline.html



I'll not shoot my .308 without it now.

[Linked Image from i.imgur.com]

Molɔ̀ːn Labé Skýla!