Under the old Model-year nomenclature system many different pieces of equipment had the same Model number. * 16-inch howitzer M1920 *

14-inch M1920 railway gun The 14-inch M1920 railway gun was the last model railway gun to be deployed by the United States Army. It was an upgrade of the US Navy 14"/50 caliber railway gun. Only four were deployed; two in the Harbor Defenses of Los Angeles and two in ...

* 4.7 inch Gun M1920 on Carriage M1920

See also