Our new line of muzzlebrake blanks were developed because we simply could not find one that did what we wanted and was made the way we like. Our brakes are all CNC machined from 416 SS or Chromemoly steel. DE brakes do not have any porting on top dead center or bottom dead center to prevent flying debris and direct back blast to the shooter. De brakes keep the rifle level and reduce recoil by more than half. Break performance will of course depend on several things like gas volume, bullet weight, barrel length, & shoulder to bore line height to name a few. All DE brakes come in blank form and need to be fitted by a smith. They will need to be reamed to diameter, faced, indexed and tapered to the barrel.