A muzzle brake is attached to the muzzle of a firearm to redirect propellant gases with the intention of reducing recoil and muzzle rise. Muzzle brakes are also used in conjunction with supressors as a sacrificial blast baffle.
Muzzle brakes work by channeling the propellant gases away from the barrel, and then up and away from the gun. The pressure of these gases acts against the muzzle brake, which slows down and redirects the gas backward. This action reduces both recoil and muzzle rise, allowing for more accurate shots.
Martin Mapa Edited answer September 18, 2022