Model Variants (Including Prototypes)
2K12 - Base Series Designation; entered limited service in 1967, wide-scale service by 1970.
2K12M1 Kub-M1 - Initial Production Model; appearing in 1973.
2K12M3 Kub-M3 - Improved 2K12 series variant; appearing in 1976.
2K12M4 Kub-M4 - Based on the 2K12M3 with interoperability with 9K37 Buk missile systems; appearing in 1978.
9M336/3M9 - Improved moderznied version; available from 1977 onwards.
2K12E "Kvadrat" - Export Variant of 2K12 series
SA-6 "Gainful" - NATO designation of 2K12 series
SA-6B - NATO designation of 3M9 series