Leon Nagant was a Russian engineer and inventor, best known for creating the Nagant M1895, a unique revolver that featured a gas-seal system. This design allowed for increased muzzle velocity and improved accuracy, making it a notable firearm in military history. The revolver was adopted by the Russian army and saw use in various conflicts. Born in 1850, Nagant was part of a family of gunmakers, which influenced his career in firearms design. His innovations contributed to the development of several other weapons, and his legacy continues to be recognized among firearm enthusiasts and historians.