This was a prototype model that I built with T-Splines, and then was exported as and STP file, it was modified and entered production. A white plastic dental root canal device on a white product on a white background is a challenge, but in this case it worked out well. I used a cream colored plastic material and twelve lighting passes, and did post production in After Effects.
This is the wireframe view of the model, and was intended to be a fully functional prototype model, thus the tolerances were 1/2000th of an inch. The only thing I didnt intend to be part of the prototype was the spring on the driver piston seen at the center of the gun.
This image shows the gun fully open and depressed.