Although the DShK has been used in a very wide variety of roles, it is most famous as the anti-air weapon of choice for Soviet tanks throughout the Cold War. Its successor, the NSV, enjoyed much of the same fame.
The DShK is a Soviet heavy machine gun that was designed by Vasily Degtyaryov and Georgi Shpagin in 1938. It fires the 12.7×108mm cartridge, which has a high muzzle velocity and can penetrate lightly armoured targets. The DShK is used as an anti-tank, anti-aircraft, and anti-materiel weapon in various wars, such as World War II, the Korean War, the Vietnam War, and various colonial conflicts. It has a gas-operated, flapper locking action and a butterfly trigger, with a rate of fire of 600 RPM. The DShK has a V-shaped sight for aiming at aircraft and a spider web sight for ground targets. Within the USSR and its sphere of influence, it is commonly nicknamed the "Dushka" (a dear or beloved person). In many ways it can be thought of as the eastern version of the Browning M2, serving in the same roles and with the same ubiquitousness.