Professional Ordnance Carbon-15 Rifle in 5.56 NATO.
Comes in original box with one 20 round magazine (accepts standard AR-15 magazines). I believe the manual is in the box as well. Sorry, no optics included.
This gun is extremely light weight and handy to use. I have shot it very little and it is pretty nearly brand new. I fired it about 20 times, then needed the optics for another gun and never put it back on this one. So it's been sitting in my vault since 1999.
Listed on Gunbroker ->
http://www.gunbroker.com/Auction/Vie...Item=120648206