I put this together some time ago and likely only used it twice. Probably less than 200 rounds through it. Fully expecting to part it out, it is an Aero Precision Upper w mega arms charging handle ($110) Faxon 16” barrel ($150) ($180 with Geissele gas block) 15” Midwest insustries rail with or without the magpul covers ($140) And I am almost certain the BCG is Aero Precision, but it doesn’t have the engaving I see on them now ($130) Feel free to reach out for pictures, questions etc. Asking $450 for the assembled upper as-is I’m not inclined to take trades at this time, but won’t be offended if you have something you want to offer
