Just making mostly aesthetic changes to the M82, and illustrating how TrackingPoint's scope would work with it. Also did an 9mm smg which started as a SCAR and was changed to look a bit like a mix of an MP5 and UMP.
video
The scope diagrams are rushed, I kitbashed a number of sketchup models I had saved to quickly get what you see. The point is more to illustrate some of the function as opposed to presenting a final design for a scope and its accessories.