F-7M is a upgrade version of F-7II,with WP-7BM engnie(export version of WP-7B).Piltot tube moved to right on nose.And F-7M got 4 under wing hardpoints can loa with PL-2,PL-7,or R.550.ect[Maybe AIM-9J/L/M?]
Within a 956 HUD(used in Harrier?),and a WAC from GEC.Marcni,a new ranger scale radar
Why PLAAF have no F-7M?
1,We must know that...PLAAF always export a aircraft better than homeuse one Before 1990.
2,First flight of F-7M is in 1983,and in 1989 we got Flankers and J-7E and update project of J-7H or more.
3,F-7M,the "M"is the first word of "Mao Yi" in chinese,which means export. So F-7M must be a Export noly aircraft.