How exactly does the M1942 Liberrator fire????????

Question

How exactly does the M1942 Liberrator fire????????

Answer 1

The weapon fired a .45 caliber pistol cartridge from an unrifled barrel.

On this site you can see the loading and firing instructions:

http://www.nfa.ca/content/view/105/197/

Answer 2

it actually was not ment to be a front weapon, it was more like a fast produced weapon to be given in soldiers hands for use behind the lines.

it was good for a neck shot or short distance.