Here’s the complete MiG-21 MF in Bulgarian Air Force service from the late 90s at the then-still-active Dobrich AFB. This particular machine has been overhauled in 1996, it has possibly been rewired to use a recce container since the MiG-21R versions were no longer flying. This local modification is known as the MiG-21 MFR. A total of 7 conversions were made.