Here is a gun I created. The HK Widow Maker.It comes in at a little over 10k tris on single texture sheet of 4096 with Metal, Rough and Diffuse. I imagined this weapon having dual load out ammo. One is tracer bullets and other explosive with explosive being semi- automatic. Uv's are setup for a FPS where the things closes to the player get a bit more UV air time so to speak. :)