Up for sale is my Spike's Tactical/Adams Arms piston upper. The upper is complete as it ships from Spike's. 16" stainless melonite finished barrel, 9.0" Daniel Defense lite rail, etc. These sell for $1,395 new from Spike's. http://www.spikestactical.com/z/index.php?main_page=product_info&cPath=63_61&products_id=230 I'll sell mine with ~500 flawless rounds through it for $1,100 OBO shipped to your door in the CONUS. I would also consider a trade for a less expensive complete upper plus cash on your end. ETA: Only interested in trades for an upper with NO fixed FSB.