The Nagant M1895 Revolver is a seven-shot, gas-seal revolver designed and produced by Belgian industrialist Léon Nagant

Nagant

The firm Fabrique d'armes Émile et Léon Nagant was established in 1859 in Liège, Belgium, to manufacture firearms.Émile and Léon Nagant were brothers, and probably best known for their important contributions to the design of the Mosin-Nagant Russian service rifle, adopted in 1891...

 for the Russian Empire

Russian Empire

The Russian Empire was a state that existed from 1721 until the Russian Revolution of 1917. It was the successor to the Tsardom of Russia and the predecessor of the Soviet Union...

. The Nagant M1895 was chambered for a proprietary cartridge, 7.62x38R, 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 allows the weapon to be suppressed (an unusual ability for a revolver).