I think M-ATF design is good shortcut for Iran as a next fighter with low RCS, because they have already worked on it for few years. Design of it is not as modern and stealth as designs like F-35 and needs some modifications, (for example it needs redesign of nose for more stealthy and of course some other parts) , but obviously it is a low RCS design.


I have read in many articles that Shafagh is newer project than M-ATF and it was started after Russians left the M-ATF project, but M-ATF project was seen after Shafagh. Shafaq was seen in 2002 Kish air show, and M-ATF was shown in 2005 Kish air show and it was the last time we saw official displaying of them.
What I can see in images and read about specifications of Shafaq, Shafaq is a trainer or light multi-role fighter jet in the class of Yak-130 or L-159.


Interestingly I found this image in a Russian website with name of “Dorna-2”. You know Dorna is first gen. of Tazarve trainer jet .

Dorna:

Unlike Shafaq it seems M-ATF design is more suitable as an air superiority fighter. M-ATF design is closer design to design of this image of Vityaz 2000.



But it seems Vityaz 2000 is more evolved and stealth design than M-ATF. I read in an article that Russian offered this Vityaz2000 design to Indians too. Shafaq hasn't internal bays, I don't know M-ATF design has internal bays or not, But I have read that in Vityaz2000 designers considered internal weapons bays for it. Designs like EuroFighter and Rafale without internal bays are low RCS fighters with RCS around 0.05 to 0.1 m2 and 0.1 to 0.2 m2 respectively. So I think even without internal weapons bays, M-ATF have the potential to be a low RCS fighter even less than Eurofighter and Rafale.

I estimated dimensions of M-ATF based on this image, If d is 60-65 cm, length of M-ATF is around 16m with a more than 1 m diameter engine. It means it is almost in the same size of fighters like F-16.
