It can be used or even have dents and scratches. This isn't for a nice gun. It will be a project gun that will get additional machining done to it so finish isn't important. Also need bolt (ramped), barrel and mag block. Basically everything to build a 9mm besides a lower. All parts can be used and or ugly so long as they work.
I have a brand new M4 upper I can trade.
Email at email@example.com instead of using the email link in my contact info.