The Thompson submachine gun weighs over ten pounds when fully loaded. It came with straight box magazines with capacities of 20 or 30 .45 ACP ammunition.

Donald Bateman Hope Coates, shown here firing an M1921 Thompson submachine gun on a trip to Mexico in the 1950s, claimed to be the first man ever fired at by someone armed with a Thompson. However ...

Coroner Herman N. Bundesen, right, and Lieut. Col. C.H. Goddard look over Thompson submachine guns in 1929 believed to be used in the St. Valentine's Day Massacre, which occurred on Feb. 14, 1929 ...