A Fusion Eradicator is a large form of T'au Melta Weapon designed as a radical solution to the limitations of current T'au Fusion Weapons technology. The Fusion Eradicator combines a battery of multiple synchronised firing chambers that can create blasts of energy so potent that any solid matter caught in its path is torn apart at a molecular level by brute thermal force, and no physical material yet known to the T'au can survive its destructive power.
The cost in materials and expertise to create a single Fusion Eradicator is immense, and the natural endurance of each weapon is limited often to a single battle. Each Fusion Eradicator is then discarded and must be replaced. Currently this weapon can only be found deployed on KX139 Ta'unar Supremacy Armour as its arm weapons.