I have a new unfired flat top upper with a bushmaster 11.5" heavy chrome lined 1:7 twist barrel. It comes with a new Oly arms FIRSH rail system. The flat top receiver was KG Kote'd. Also has an SPR gas block from Badger Ordanance. I would lke $420 for it, but make me an offer. (anything close to $350 would be a good start...)
It hasnt even been shot yet, and I can email pics.