This is a 9mm Upper purchased from (Rock River Arms) for a M-16.
No Bolt.... I repeat no Bolt is included.
Included is the orginal flash suppressor plus the new compensator.
Also, inside the hand guard are the custom weights.
Finally, the BC-CAM AR15 A1/A2 Co-Witnessing Mount is also included.
The Upper functions flawlessly and has about three thousand rounds through it.
Price is $420 plus shipping.