Soviet heavy machine gun designed to replace the aging DShK, significantly lighter at 25 lbs vs the DShK's 78 lbs on mount. NSV stands for Nikitin-Sokolov-Volkov, the three designers. Used on tanks, helicopters, and infantry mounts. Type: Machine Gun Action: Select-Fire Caliber: 12.7x108mm Capacity: 100 Year introduced: 1972, Soviet Union Weight: 256 oz Overall length: 47.5" Status: Active Military use: Yes Intended use: Military, Vehicle Mounted, Anti-Aircraft