You got a HUGE space for the buy image, yet you fail to use it to your advantage. The receiver lacks detail. No trigger, for god's sake. The 20 round mag is too long and the front iron sights need to be thicker. The killicon is too big, though.
This M16A1 looks quite nice in design, only thing that is lacking is those extra pixel details. The rifle looks kind of sharp I think it needs some slight blending and perhaps added color-depth. I still like it so far.