Are you looking for stripped, complete (i.e. port door and fwd assist installed), or a full upper receiver assembly (barrel, handguard, etc)?
Full upper with barrel, handguard (prefer something with a free float rail), gas block, gas tube installed. If it has the BCG awesome, if not its not a big deal as it will be switched out most likely.
Went and picked up an upper today. The guy helping was awesome and very informative. Unfortunately I did not get his name .
Bradis is quickly becoming my favorite shop in Indiana.