Lantac Dragon Dead Air KEYMO Wolfman 5.56mm NATO/223 Remington Muzzle Brake - Manufactured to the highest quality standards and featuring a patented design, the LANTAC DGN556B-WM Muzzle Brake offers improved recoil management and muzzle rise over competitors products. Its unique Short Energy Pulse system reduces length of recoil so that repeating shot energy cannot overlap and knock the shooter off target. Full auto fire is possible with massively reduced recoil and muzzle climb, meaning that all shots fall on target. Shooters can now enjoy advanced weapon control with the ability to mount the Dead Air Wolfman KEYMO silencer to their firearms. Dragon brakes are precision manufactured on Swiss lathes and machined from AISI4150 steel that is then hardened to 48-52Rc (Rockwell C) and QPQ (Quench Polish Quench) Nitrided to AMS2753D standards for enhanced corrosion resistance and improved lifespan. The mount design is fully licensed from Dead Air, therefore customers suppressor warranty remains unaffected. FEATURES: Caliber: 5.56mm NATO/223 Remington Material: AISI4140, Hardened 48-52Rc Dimensions: L: 2.367in, MOUNT: 1.08in Weight: 3.68oz Thread: M13.5 x 1 LH Serial Numbered for Quality Control Comes with approprate timing shim set Made in the USA