787B Prototype Railgun, BTC Bipedal live-fire Test Chassis.
Live fire test bay 4
787B LIN\ACCEL / Full kV test:0028
I wanted to design a prototype railgun, something beyond what a human could wield, a work-in-progress test weapon that would never end up on a battle field but looks all the cooler for it. The rest of the image was informed by that decision, with a sparse robotic test chassis and a high tech live-fire test bay. I made a rough 3d model to begin with and had fun painting the details. Here's a full res crop.
This image can be found in the upcoming release of 'Nothing but Mech' Volume II.