This unit is new and has never had a barrel, FWD assist, or port door installed. However it is NOT the prettiest upper I have ever had as it has quite a few factory machine/tooling marks visible in various places. However on the inside (where it counts) it looks normal not rough like the outside. This upper came to me new in wrap straight from a Colt distributor so I know it is not a victim of abuse or a bad refinish job. I am selling it "as is no return" for $190.00 plus shipping. Please contact me via IM or e-mail.