This was the second project I worked on for Fallout: Miami, a modular heavy plasma weapon. I modeled the high-res off of a provided block-out mesh, then did all of the game-res and texturing on the base receiver, two scopes, and four barrels.
Link to the original concept by Marko Lipovac, who was also responsible for the blockout:
https://www.artstation.com/artwork/188olK