This is a LE trade in complete upper in used condition.
It features a raised C Alcoa forge marking upper receiver.
Colt milspec charging handle.
C stamped full auto bcg.
06/01 marked colt barrel with the C MP stamps on the end near muzzle device which is not pinned / welded.
F marked FSP with a trijicon tritium front sight.
Barrel mounted sling swivel loop.
Round 7 hole hand guard.
This upper came in complete as shown.