Our famous ATRS Gill brake is now available for the Accuracy International AX 50 rifles. The most efficient muzzle brake for use on large caliber rifles and was designed specifically for prone shooting to control dust signature. Our Gill brakes have been engineered to reduce the felt recoil by 50% and to help with muzzle control so you are able to remain on target much better. Our Gill brakes do not direct the muzzle blast at the shooter. These brakes index with a set screw for easy install. These brakes are machined from 17-4 stainless steel and have been salt bath nitrided for an extremely durable matte black finish.