Thompson 45 SMGs
Used by Vic Morrow in the TV series "Combat" by Big Joe in "Kelly's Heros" and by Machine Gun Kelly and Al Capone in real life Chicago.
The United States Army used them up through the beginning of the Viet Nam "Conflict." Lots of lead; not too relieble. Too expensive to manufacture, so we went with the "Grease Gun" and stamped metal instead......uugghhhh...