I just found out it'll be at least 3 more weeks before they work on my upper. Plus shipping time.
I can't tell you how stressful that is. It's not Ko-Tonic's fault, per se. They're selling uppers faster than they can keep the parts in stock. My only complaint is that should have been noted at the time I ordered it so that my hopes and dreams wouldn't have been dashed ;)
They're out of 16" barrels. Part of me wants to switch to the 18" because I'm impatient... But then there'd be some other part missing that I'd have to wait 3 more months to get so...