The NSV Utyos, is a Soviet heavy machine gun chambered in 12.7×108mm. It is named after the designers, G. I. Nikitin, Y. М. Sokolov and V. I. Volkov. It was designed to replace the DShK machine gun and was adopted by the Soviet Army in 1971.

The 12.7×108mm cartridge is a 12.7 mm heavy machine gun and anti-materiel rifle cartridge used by the former Soviet Union and Warsaw Pact countries, including Russia, China, Iran, North Korea, and many others. It was invented in 1934 to create a cartridge like the German 13.2mm TuF anti-tank rifle round and the American .50 Browning Machine Gun round.