Photoshop CC, Sketchup 2014 & Keyshot 4.
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/  
 

Credits:
- Borderlands 2
- www.cgtextures.com
- www.game-art-hq.com/