The MA-0K03 was the final assault rifle of the Micro-Abrasion series. The weapon used small, incendiary pellets that would tear through armor faster than it's predecessors. The weapon was also several times smaller than the earlier ones models. The company that made it, Sea Leaf, never commented on why the assault rifle was smaller. Though a scientist who worked on the weapon said in an unofficial statement that it was done to make the weapon's user quicker.