The butt-stock doubles as a stake for hunting vampires! haha! I suggest you have a look at the handle and the stock. Both aren't at all like what you'd see on an M4. Are you working with one reference image? Have a look at the curvature of the stock here: And how the grip looks here: You're on a good start though! Keep it…
A good start, some shaded wires would made feedback a little easer. At the moment, the stock is in the greatest need of some TLC. Using turbosmooth will very quickly eating away at your poly limit, especially with support edges which is what you need because at the moment the edges on the stock are too soft. You also have…
I think you really need to focus on the 1st person view a bit more, all the small screws, grove on the stock etc all have excessive amounts of triangles when compared to your scope and the housing for the safety(?) switch on the stock. I would double if not more the sides on the scope as a normal map will not carry it,…