Certain weapons are prone to overheating, either because of poor design or because they fire unstable superheated ammunition. An unmodified roll to hit of 91 or higher causes the weapon to Overheat. When this happens the wielder immediately suffers a single hit from the weapon to his arm (left or right, depending on which hand he favours). Once the hit has been resolved the wielder must then make an Agility Test or drop the weapon as a Free Action. Whether or not the wielder drops the weapon, it must spend the following round cooling down and cannot be used. Weapons with this Special Quality never jam; and jam result indicates they Overheat instead.