The wires connecting to the sides of the mask are linked to the caster. These wires unify the casters movement with the mask's tri beam laser sight. Basically, the caster is aimed by the predators head movement. It can also be manually aimed by controls on the left wrist gauntlet. There are small mandible triggered mechanisms inside the mask to fire the caster without touching the gauntlet controls, this means that the pred can use his hands for other purposes while attacking prey with the caster.