This is a Colt Factory Assembled upper.
Has T-numbers, "F" front sight assy w/lug, A2 FH, marked "M4" above gas tube.
16" M4 profile barrel, C MP 5.56 1/7 marked. M4 feedramps. Comes with charging handle and factory headspaced M4 Bolt, (no carrier). Has side sling adaptor, and M4 handguards.
Fired approx 500 or less. Looks mint. Small hole, of course. Chrome lined barrel.
Barrel date: 08/02 Has "O" chamber marking and paint dab at gas tube location.
Payment by Postal MO, sorry, no trades.
3 Day inspection period.