Uranium-238

U-238, or Depleted Unranium, is an isotop of the radioactive element uranium. It is most likily a product of the Terran's use in nuclear fuel. After being spent in fusion reactions, the leftover material is recycled as ammunition. It is most popularily used by Marines to upgrade their range. Each round has proven equally effective against Neosteel armor, Zerg Carapaces, and Protoss Plasma Shields.