Mikoyan-Gurevich MiG-21 Fishbed (Part 4). I present a comprehensive AI traffic model package for this iconic aircraft of modern military history. With over 15,000 airframes of all types, including license-manufacture, the MiG-21 is the second-highest produced jet fighter of all time (next to the MiG-15 at 18,000+); and is the highest-produced jet fighter in the post-1960 'missile' age. The model is an 8-LOD model, with quite a bit of XML animation and effects. This aircraft has been used operationally by 53 countries across fifty years, with extensive combat experience world-wide, and hundreds are still in service to this day. Part 4 is the bis-series, the final-production Fishbeds. Included variants are the MiG-21bis-75A and MiG-21bis-75B. With loadout options, there are a total of 24 models and 24 paints in this package. Multiple credits are given in the documentation for everybody who pitched in to help on this one. Base model, paint kit, and textures by Michael Pearson.