I have a like-new Bushmaster 16" V-match upper with fluted heavy barrel for sale. The upper has only had 100 rounds fired through it and is very accurate. This is a flattop upper with milled front sight and free-float hand guard. The upper is in pre-ban configuration but if you wish to use it on a post-ban upper, you can have the bayonet lugs removed and replace the flash hider with a compensator. Bolt, carrier, and charging handle included. I paid $625 for this back in June; asking $525 plus $15 shipping. Money order or Paypal accepted (add 3% for Paypal).
Also, if you ordered this upper directly from Bushmaster, you’d have to wait 4-8 weeks to get it. If you but it from me however, I'll ship it the day after receiving the payment.
See this link for more info on upper: http://www.bushmaster.com/shopping/uppers/pre-ban/burvmb16.asp