The player character will need to get parts for it to get it to work again though. It can freeze enemies and runs on cryo energy.
The gun will not necessarily kill a foe, but it will render it immobile, giving the Prisoner an uncontested turn against the crippled enemy. As such, the gun is effective against robots as well as the New California Republic (NCR) personnel. Once assembled, the gun works great against any armor since it super-freezes joints and moving parts. A prototype weapon that can be constructed by the Mechanic Boy.