Yankee Hill Machine Low Profile Muzzle Brakes offer great recoil reduction, increasing recovery time on target. Their low profile design allows a gas block with an inside diameter of 0.75" to be installed and uninstalled without the removal of the Muzzle Brake. The Low Profile Muzzle Brake's small outside diameter is great when pinning and welding the Muzzle Brake on a 14.5" barrel. Since it allows both the gas block and the handguard to be installed directly over the Muzzle Brake.