Rock River 16" upper with chrome-moly heavy barrel, 1/9 twist and a Phantom FH with just over 2000 rounds through it. Includes RRA B/C/H. The FSB was profiled at the base to give clearance to the Samson rail. There are very small cosmetic scratches on the upper receiver from various optics mounted on it but do not detract from functioning in any way. The Samson rail ( MRFS-CX 10) is almost new. It lists for $300 from various companies. It also sports an ARMS#40 BUIS.
Asking price is $615 shipped for the entire package.