Russia has finally displayed the latest version of the MiG 31 interceptor along with its weapons loadout.

Of interest is that this is the first showing of the R-33S (bottom pic, right hand side), which differs from the basic R-33 by having some small destabilizing surfaces up front (the ones with the ray and white bodies).

It’s about 40 kg (88 lb) heavier than the basic R-33, which would imply some increase in range, and the destabilizing surfaces implies an increase in maneuverability, though it is still clearly not intended for highly maneuverable targets.

You can click the pics for the full size photographs.