Complex sentence: A muzzle brake or recoil compensator is a device connected to the muzzle of a firearm or cannon that redirects propellant gases to counter recoil and unwanted rising of the barrel during rapid fire.
Split into simpler sentences: A muzzle brake or recoil compensator is a device connected to the muzzle of a firearm or cannon. It redirects propellant gases to counter recoil and unwanted rising of the barrel during rapid fire.