The flashlight was made by ITP. The model number from ITP is C7. This flashlight head was used by the C7 (1aa), C8 (2aa, and C9 (123a). The C7 body and C9 body still seem to be available at Aegis Gear. This series of flashlights are out of production, so please acquire any parts while they are still available. The 123 body will run the flashlight brighter than the single AA, unless it is a 14500 battery. If your switch is damaged the c9 body comes with one, the c7 body does not.