I like it, alot further then I ever got on my builds...
The only things I'd suggest are;
-Sling loop under the front sight
-KA rail covers on unused sides, perhaps a KA vertical grip
-ACOG TA01 (either irons on top or DR sight)
-Charging handle?
-Dual sling loops behind the receiver
You could consider it a Diemaco C8SFW and not need to worry about the metal body too