T’au Supremacy armour is larger than any other current class of battlesuit. It is intended to meet a threat that the T’au Empire has not yet prepared for; the defence of worlds within their growing domain from the counter-expansion forces of other races.
Lacking the manoeuvrability of other battlesuits, the KX139 Ta’unar Supremacy Armour was designed for static defence, carrying massively destructive, long range weapons.
The T’au Heavy Rail Cannon Array is the most powerful armament yet developed to be mounted on the KX139 Ta’unar Supremacy Armour without structural damage being incurred from its use. It was created to eliminate the toughest enemy targets at extreme range.