The DIsk Launcher is a weapon primarily used by the Matoran of Metru Nui. Basically all Matoran have them while walking around the city either for protection or for the sport Akilini. The Vahki also used these weapons and were fused onto their head. Toa Metru Vakama chose to have one of these weapons as his Toa Tool but his was specialized to suit him. Some boats also had Disk launchers equipped to them.