The basic structure and shape of NSV are taken from the 7.62mm caliber general machine gun originally bid by NIF and sokolov, so that it has long been mistaken by western light weapons experts that Kalashnikov also participated in the design of NSV (NIF- sokolov machine gun looks like PK machine gun). The gun adopts air guiding working principle and bolt deflection locking mechanism. The whole automaton is connected together and can be taken out as a whole, which is convenient for battlefield wiping. The barrel of the gun was changed quickly, and it was necessary to change the barrel after 1000 was returned. Gun length 1560mm, gun weight 25kg, barrel 9kg. The machine gun can be used as different machine guns with different gun racks. The NSV is mounted on the 6T7 gun rack for infantry, which is mainly used to deal with ground targets, and is called the NSVS machine gun. Installed on the anti-aircraft gun rack, it is called NSV 12.7 mm anti-aircraft machine gun, which can rotate 360 degrees; It is called the tank side machine gun installed on the tank armored vehicle. The gun uses ordinary mechanical sights and SPP daytime sights to shoot ground targets, and uses 10P8 1 collimating optical sights to shoot air targets. It can also be equipped with 10P80 sights and 1PN52- 1 night vision sights.

The gun fires a powerful and heavy bomb with the caliber of 12.7× 108 mm specially developed by the Soviet Union, including armor-piercing projectile, armor-piercing incendiary projectile, armor-piercing burning tracer projectile and instant explosive projectile. The muzzle velocity is 845 m/s, the maximum range is 6000 m, the track gauge is 2000 m, and the effective range is 1500 ~ 2000. The combat firing rate is 80 ~ 100 rounds per minute, which is more than enough to deal with light armored targets and bunkers within 1500 meters. The elastic chain is used for ammunition supply, and the elastic chain box can hold 50 rounds of ammunition.