BEAUTIFUL! I am partial to TOW systems since that is what I worked on, along with the Bradley TOW system, the most while I was in the Army.
The only thing I would change basing on the type of M249 SAW and radio mounted, is the MRE boxes. Those are the wrong type of MRE boxes for the era of the vehicle. Also, if your going to paint the figures in the 6 color DCU ("chocolate chip"), I would repaint the helmet and clothes on the hummer the same way.