The BT X-42 heavy flamethrower, alternatively called the clone flamethrower, represented a flame-projecting weapon system engineered for the forces of the Grand Army of the Republic throughout the duration of the Clone Wars. These weapons, employed by the clone flame troopers, were specifically intended for engagement with targets lacking substantial armor protection, for example, Geonosian warriors throughout the Second Battle of Geonosis. The Mandalorian Royal Guard also utilized this weapon.