I recently finished the Hard Surface Modeling for Characters over at CGMA, with lectures by the awesome Ben Erdt : https://www.artstation.com/benerdt and hosted by the amazing Laura Gallagher : https://www.artstation.com/lipstick
IT was a lot of fun, and learned a lot, so for anyone interested in learning more about sculpting Hard Surface in Zbrush and then take them to the next level, I can't recommend it enough!
Even though I am currently in the middle of retopologizing I did want to post a small WIP shot of my current progress.
The orignal concept was drawn by Ben Erdt.
Current WIP of the Game Res model, textures and materials far from final.