Characteristics of the .38 Cal. Military Revolver
.38 Cal. Revolver training for Shore Patrol trainees at the Negro Service School, Naval Training Station, Great Lakes, IL, November 1943.
A .38 caliber revolver is a pistol in which a rotating cylinder presents six loaded chambers to the barrel for discharge in succession. 2-inch and 4-inch barrels have been in U.S. service along with a limited number with 6-inch barrels.
All revolvers are cylinder-loaded, exposed-hammer, selective double-action, hand weapons. The revolving cylinder with 6 chambers permits firing 6 shots without reloading. The action of cocking the hammer causes the cylinder to rotate and align the next chamber with the barrel. At the full cocked position, the revolver is ready to fire in the single action mode by a "light" squeeze on the trigger. If the hammer is not in the full cocked position, the revolver may be fired "double action" by a longer, heavier squeeze on the trigger.
Recommended Books about .38 Cal. Military Pistols
A History of The Colt Revolver and the Other Arms Made by Colt's Patent Fire Arms Manufacturing Company from 1836 to 1940
America's Right Arm: The Smith and Wesson Military and Police Revolver