The immolation pistol is a highly advanced weapon of Visitor design that fired blue shots from its muzzel. Contact with an organic based target seemingly disintegrating an enemy making it an effective weapon against enemy personnel.
In an attempt to provide a distraction on the Mothership for Erica Evans, Joshua openly turned against the Visitors by acquiring a pistol and began firing at the guards stationed on the ship. When FBI Agent Evans arrived on the scene, she attempted to spirit him to safety but he told her to shoot him in order to remove any suspicion from her. When she refused, Joshua turned the pistol on her but she fired her gun seemingly killing the Fifth Column Visitor. (Red Sky)
- Its not known whether the pistol is an energy based weapon or simply an advanced projectile weapon though its effects seem similar to that of the Suicide Pill. It may even fire them.