A quick sketch while I was waiting for renders at work. This is "Mixed Realities". A Fallen SMG built out a 45 cal. Vector. The Fallen added a rail extension to super heat the rounds after exiting the barrel. This of course led to overheating issues. So in standard Fallen practice they sloppily sapped on some exhaust vents to compensate. The polymer on top helps keeps everything together and some tribal banners are pinned on for tradition.
Come watch me make models like this at https://www.twitch.tv/smooth_octopus