Before the famous M2 Browning Machine Gun, there was the Colt Model 1924 Automatic Machine Gun. Here's a look at an original operating manual for the gun from the American Rifleman Tech Files.

Description (Brief) The Model 1895/14 Colt-Browning Machine Gun was the first gas operated machine gun adopted by the U.S. military. It was manufactured in a number of American and European calibers ...