The good thing a about the movie Firefox is that the got the designation MiG-31 correct and the potential NATO code name "Firefox" consistent with other actual NATO name such as Firebar, Foxbat, Foxhound.
that's a little bitty feller, I don't know what the thrust is, but any talk of hanging weapons on it, well, lets just say it would likely haul a couple of paks of "Black Cats", and a roman candle or two??? It really is tiny