My first try with Lantac was on my AR. I was amazed at how it tamed an already mild .556 down to practically nothing! And yes, the thing is loud! It worked so well I ordered another to put on my wife's AR and she loved it. Then they came out with the version for the .308 and I quickly bought and installed one. Simply amazing taming of that rifle also. Subsequent shots come faster and with more accuracy. Again, loud. So when they came out with the break for an AK I jumped all over it. Not surprising since it tamed my .308 it settled the AK down also. Again, loud. Now as to the loud part, I wear hearing protection and it just is not a problem for me at all. If the time ever came that my weapon was the difference between my life and death, loud would be the least of my concerns! I have used numerous breaks over the years and this thing hands down is the best I have found, bar none. Highly recommended!