The AREA 419 HELLFIRE Self Timing Brake system is not just another knockoff copy of existing self timing brakes. It was engineered from the ground up to be extremely effective, easier to install, and much more versatile. The HELLFIRE Muzzle Brake is designed to provide an optimized brake for Semi-Automatic and/or hunting weapons systems with barrels of 20″ or less. This brake will offer the greatest performance possible while maintaining shooter comfort.