The Ion Dust Projector 4XK2, or "Nui Rifle" as it is more commonly known, is a dual barrel rifle adaptation of the Ion Pulse Projector 4XH3, created by the Toa of the Island of Xirrax. The Ion Pulse Projector 4XH3 was created as a basic infantry weapon, but the adaptations made make it a more dangerous weapon capable of sniping targets from a range of about half a mile.
The right side of the gun. The grey barrel along the side of the Nui Rifle is the arc chamber, where the Ion dust is heated.
The left side of the gun. The silver, metallic tube that runs alongside the Nui Rifle is the loading barrel. This is where the solidified Ion bullets are inserted into the rifle.
Trigger-happy Hewkii tests his new Nui Rifle. The Nui Rifle works by heating solidified Ion bullets to an extremely high temperature, turning them into Ion gas. This gas is then compressed and pushed out of the barrel by a small Proton force generator, which pushes the dust out of the barrel so fast it does not have time to spread out into the air, leaving the dust in a long red beam. When the dust hits the target, it sticks to them and begins to eat away at their body as it turns into Ion water, until they are completed disintergrated.