Weapon Concept 001

i need some critiques and ideas of what could i add into my model. was kinda hard to make the grip (polimer one) cuz i decided to sculpt it and then retopology, same for the polimer stock though i couldnt get what i wanted in back side cuz it doesnt look like the reference image , this is a tapco stock for ak47 and that part its flatter than curved in the real photos.

Uploading: xscreenshot-20190508T031541.png…