Talk:MiG-31 Foxhound/@comment-3522837-20150818080408/@comment-2094030-20150818083902

All of the previous MiG-31s could be the MiG-31 01DZ variant or MiG-31B. The original MiG-31 didn't have air refueling capability. They could be MiG-31 01DZ, the original MiG-31 fitted with IFR capability, but the number of produced 01DZ is actually smaller than the 31B variant. However, there's also the MiG-31M in AC5, which is an upgrade to the original MiG-31s, and it's older than MiG-31B.