A well known mod here at Interlopers, Holdout, have graced us with a small update of their progress, a concept sketch and an early model render:
"Also, Louissi, Darklord101 and I have been working on skinning this beast C4l3B created. It should be done soon and weighs in at an amazing 1200 polys! Less then half the polys of your average CS gun! That means we can have a lot of these, and your FPS will hardly take a hit."
Check out the mod here.