Dead Air Armament Key Mount Muzzle Brake Features The Dead Air Armament KeyMo Muzzle Brake ports gas and pressure efficiently both as a standalone brake and as the mounting interface for a Dead Air KeyMo-equipped silencer. When the shooter is ready for a quieter setup the brake allows a Sandman Series or other KeyMo suppressor to attach quickly without tools. When the can is not mounted the brake alone delivers a flatter-shooting rifle with noticeably less concussion than many traditional muzzle devices. The quick-detach KeyMo interface removes the suppressor cleanly without the carbon-locking that plagues many other mounting systems. Built from 4140HT chromium-molybdenum heat-treated steel and finished in black nitride the brake is engineered to survive the heat and pressure cycling of big-bore cartridges up to .458. Its muzzle-seating design means it indexes properly even on barrels with minimal shoulder so no shims are required during installation. At 3.2 ounces and 2.58 inches overall it adds minimal length and weight to the host rifle. Threaded 11/16x24 for .45 caliber rifles the Dead Air Armament KeyMo Muzzle Brake is a durable dual-purpose muzzle device for sale at GrabAGun. Dead Air Armament Key Mount Muzzle Brake Specifications Manufacturer: Dead Air Armament Model: Key Mount Muzzle Brake Caliber: .45 Caliber Color: Black Material: 4140HT Chromium-Molybdenum Steel Finish: Nitride Thread Pattern: 11/16x24 Overall Length: 2.58 Weight: 3.2 oz Available At: GrabAGun