I think you really need to change some of your edges.. especially on the main body and some of the simpler shapes. They are super tight right now and almost read like 90° edges. I can't judge how much of it is still work in progress though.
thanks for your comment but sadly, i just finished that gun and that's my first gun also. After that, i got some experience and learned some news and i will try to get it better. You can check my gun at here and tell me what you think, i will be very happy to see that :D https://www.artstation.com/artwork/mW82Z my new…
yes, you're absolutely right! I still find a new way, a better way than mixing material/textures by PTS. I heard about substance painter but i never try it before, do you have any idea to help me this out pls? btw, i just rework the new grip