The KPV heavy machine gun (Russian: КПВ, romanized: KPV, an initialism for Крупнокалиберный пулемёт Владимирова, Krupnokaliberny pulemyot Vladimirova, 'Vladimirov's Large-Caliber Machine Gun') is a Soviet designed 14.5×114mm-caliber heavy machine gun, which first entered service as an infantry weapon (designated PKP) in 1949. In the 1960s, the infantry version was taken out of production because it was too large and heavy. It was later redesigned for anti-aircraft use, as it showed excellent results as an AA gun against low flying aircraft, with a range of 3,000 m (9,800 ft) horizontally and 2,000 m (6,600 ft) vertically.[4] It was used in the ZPU series of anti-aircraft guns. Its size and power also made it a useful light anti-armour weapon on the BTR series of vehicles and the BRDM-2 scout car.