[b][u]Photoshop CC, Sketchup 2014 & Keyshot 4.
[/u][/b]Quick work done about an hour; I used Sketchup to build the general form then render via Keyshot. Painting and texturized with Photoshop.

Reinhold-Hoffmann has continuously support me since back when I was just starting Digital Arts, so I'm always happy getting a chance to contribute to Game-Art-HQ: www.game-art-hq.com/  
 

[b][u]Credits:
[/u][/b]- Borderlands 2
- www.cgtextures.com
- www.game-art-hq.com/