chassis, only rockets) was revealed to public. The China Aerospace Science and Technology Corporation (CASIC) developed FK-1000, differs from 2K22 Tunguska in that FK-1000 is mounted on an 8 × 8 truck, and the 30 mm guns of Tunguska are replaced by 25 mm autocannons. The radars of FK-1000 are arranged in the exactly the same way as in 2K22 Tunguska, but mechanically scanned surveillance and tracking radars of Tunguska are both replaced by a phased array radars in FK-1000. A total of 12 missiles are mounted on the sides of weapons station, with 6 on each side, in the form of 2 rows of 3 containers/launchers each. The missile of FK-1000 is designated as KS-1000, which is also surprisingly similar to 9M311, and this has led many in the west to claim that FK-1000 system is derived from 2K22 Tunguska, but with cheaper price tag than the latest Russian system: in comparison to the 15 million dollars of Pantsir-S1 (SA-22), FK-1000 system is priced at 5 million dollars. Combat history Variants of the 2K22 system have continued to serve in the Soviet and later Russian armed forces since their initial introduction in 1984. The 2K22 has also been inducted into the armed forces of a number of foreign states, most notably India. The 2K22 has been used in the 2008 South Ossetia war by Russian armed forces. Operators Current operators : 2S6 : 2S6M1 in service in small numbers : 12 2К22М1s as of 2012 : 38 acquired from Russia between 2004 and 2007, and 3 from Ukraine in 2019 : more than 250 2К22s as of 2012, according to Military Balance 2012. 21 Tunguska-M1s were delivered in 2012–2017. : six 2S6М1s delivered in 2008 : 70 2S6s as of 2012, according to Military Balance 2012. At least one captured Tunguska-M1 is operational in Ukrainian service. 75 as of 2021. Former operators : Passed on to successor states. Comparable systems Pantsir-S1 K30 Biho HS M09 BOV-3 Air Defense Anti-Tank System Flugabwehrkanonenpanzer Gepard PZA Loara Tor missile system Type 87 Self-Propelled Anti-Aircraft Gun Type 95 SPAAA LAV-AD (Air Defense) References External links Tunguska-M1 Air Defense Missile/Gun System, KBP Instrument Design Bureau website Federation of American Scientists Warfare.ru SA-19 Threat Update: 2S6 Tunguska Self-Propelled Air Defense System, Red Thrust Star, April 1995 issue YouTube Tunguska-M1 Video Tunguska-M1 Walkaround Self-propelled anti-aircraft weapons of the Soviet Union Self-propelled anti-aircraft weapons of Russia Close-in