Here is my Old M4 I sold. It had all metal parts except the body and crane stock, full metal RIS rail and metal Eotech clone red dot sight, with metal suppressor. The gun was originally a DBOYS M4 CQB SD, but I put on an Armalite trademarked body and a Classic army standard M4 outer barrel.
I sold for a low price of $115 since the gearbox was busted. It was a great and accurate gun at 380FPS when it worked... Some pictures, it looked very REAL!