Thank you Sea Dog that made me recall that at the time the people in charge of Europe and the USA thought they could have a "limited nuclear conflict" with the Warsaw pact and not do alot of damage to Europe. The nuetron bomb was one of the wonder weapons in their wonder world.
I bet one of those Liberators is worth alot of money today. If they added a silencer to it then I would feel better using the thing but a .22 round is not likely to kill anyone right off the bat.