Here's another gun design this time it's James' Mk.46 LMG basically what it is, is a M249 LMG with the barrel cut short. They also removed the feature of being able to use 30 round magazines found on M16s and M4s in Mk.46 to save weight.
The scope on the Mk.46 is an ELCAN SpectreDR 1-4x scope. It also has a vertival fore grip for ease of use when standing. For the electronics it has a PEQ-15 laser emitter on the top rail and it has a flashlight on the side.