This model is the property of Frontier Developments and Elite: Dangerous is registered to them. This content was not created by myself, but extracted from the game so I could enjoy the ship in real life. I highly recommend the game, you can get it here.
TL;DR I didn't design this.
The process for extracting this model from the game is outlined in this video.
I increased the model size by a factor of 2 from the model I actually got, using Blender.
From the Elite: Dangerous wiki:
The Viper MkIII is the most recent development of the most successful fighter classes ever built. The original Viper Defence Craft was designed by Faulcon Manspace in 2762 in the Reorte shipyards. The basic model was beefed up with the Viper II by Faulcon deLacy. The new Viper III is a revitalised model with a new more armoured look. It is a top class fighter found in many well-equipped police and naval forces.