The LeMat revolver was a .42 or .36 caliber cap & ball black powder revolver invented by Jean Alexandre LeMat of New Orleans, which featured an unusual secondary 20 gauge smooth-bore barrel capable of firing buckshot. It saw service with the armed forces of the Confederate States of America during the American Civil War of 1861–65 and the Army of the Government of National Defense during the Franco-Prussian War. This unique sidearm was also known as the "Grape Shot Revolver." The distinguishing characteristic of LeMat's revolver is that its 9-shot cylinder revolves around a separate central barrel of larger caliber than the chambers in the cylinder proper. The central barrel is smooth-bore and can function as a short-barreled shotgun (hence the name "Grape Shot Revolver") with the shooter selecting whether to fire from the cylinder or the smooth-bore barrel by flipping a lever on the end of the hammer. Flipping the lever up caused the movable striker to fall upon the primer set directly under the hammer, discharging the lower barrel, while leaving it in the standard position would fire the chambers in the cylinder, much like any other revolver.