The Nagant M1895 Revolver is a seven-shot, gas-seal revolver designed and produced by Belgian industrialist Léon Nagant for the Russian Empire. The Nagant M1895 was chambered for a proprietary cartridge, 7.62×38mmR, and featured an unusual “gas-seal” system, in which the cylinder moved forward when the gun was cocked, to close the gap between the cylinder and the barrel, providing a boost to the muzzle velocity of the fired projectile and allowing the weapon to be suppressed (an unusual ability for a revolver). Other Nagant revolver designs were also adopted by police and military services of Sweden (7.5mm M1887), Norway (M1893), Poland, and Greece (??? M1895). These revolvers were largely similar to the Russian Nagant M1895, but lacked the gas seal mechanism.