I have a 16" stainless steel Hbar upper, flat top has "T" numbers in grooves (I never did really know what they are called) for spacing optics? I got this from Bilbo a little while back and he told me it was an RRA upper and had about 300 rounds on it when we traded, I put about another 100 through it. Front sight tower is shaved, standard CAR handguards. Overall it is in great shape, a few minor marks on top from optics mounting and there are a few small chips in paint on the shaved sight tower (first one I have seen painted but is definitely factory by my eye at least).
So far I have had flawless function with this and accuracy is fine (1" groups at 100 yards with Olympic 55 grain, not known for outstanding accuracy amongst available ammo).
I would like to trade this upper (without B/BC/CH) for a 16" M4 pre-ban upper, preferably with chrome lined barrel but will consider others if good quality, you keep your bolt carrier group and CH unless its imperative to keep each with original uppers. I WOULD ALSO CONSIDER JUST A BARREL TRADE FOR A BUSHY M4 WITH FULL FRONT SIGHT TOWER, POST-BAN BUSHY UPPER/BARRELS ALSO CONSIDERED THAT COULD BE CONVERTED.
I just made a trade for a pre-ban lower and it would be silly to have a post-ban upper on it, I would also consider other pre-ban configuration uppers but would prefer the M4, let me know what you have.
Barring a trade I would sell this upper outright for $375 shipped.
Pics on request till I can get some up on the web.