A prototype weapon that can be constructed by the Mechanic Boy. Once assembled, the gun works great against any armor since it super-freezes joints and moving parts. As such, the gun is effective against robots as well as the New California Republic (NCR) personnel. The gun will not necessarily kill a foe, but it will render it immobile, giving the player an uncontested turns against the crippled enemy. It can freeze enemies and runs on cryo energy. You need to get parts for it to get it to work again though. S.O.R.-1000 Alpha, a robot which can be acquired as a follower, can assemble it for you if you have the parts.