I would like to trade my mil spec upper with a carbine length handgaurd for one with either a mid or full length hand guard and 16 or 18 inch heavy barrel. I bought mine at the last gun show from m&s armament. I'm not sure of the brand of the receiver but it has a 16 inch Wilson combat heavy barrel. It has NOT been fired once so I would like to trade for one in similar condition. I will also only trade for one with a mil spec heavy barrel as well. It will come with the BCG if yours does if not I keep the one in it. Located in Indy an no pics at this time.