A Russian is a short range IR-Homing Air-To-Air Missile. Although it is an air-to-air missile, it has also been used as a surface-to-air missile.
The Models&Textures zip file contains the following model file formats
Textures (.zip) contains 5 textures of 4096px resolution viz.
You could use it in your fighter aircrafts by attaching it to a pylon and its ready to go.The Maya file is the native file. The FBX file might need you to reassign textures to the material.