Mikoyan MiG-31 Foxhound- 1981 ~ present
- Russian Air Force & Kazakhstan Air Force
- MiG-31B - upgraded avionics & added in-flight refueling probe in 1990. Equipped with improved R-33S missiles.
- MiG-31BS - MiG-31 01DZ (Two-seat all weather, all altitude interceptor) converted to MiG-31B standard.
- MiG-31BM - modernized variant of MiG-31B in 2011
- MiG-31BSM - modernized variant of MiG-31BS in 2014
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