The CQ muzzle brake features in-line ports to redirect propelled gas to minimize recoil.  Drilled venting holes reduces muzzle rise, improving shooter control and accuracy.
For your safety, Trinity Force recommends this part be installed by a competent, qualified gunsmith/installer with an understanding of the weapon platform that the part is being installed on. Always make sure the firearm is unloaded and pointed in a safe direction when working.