I have a new, complete 16" carbine length A2 upper assembly. It is complete except for the bolt carrier group and charging handle. I can find no markings on it except for the "square" forging mark near the rear sight, so that is all I can tell you about it. It does have a couple of scuffs from handling, but it is new and unfired.
Would consider trades for a flat top upper or any gun or bowhunting related items.
email is best: firstname.lastname@example.org
Thanks and God bless all,