MAX-11 upper (flat top) with MAC (3/4x10) threaded barrel, extended charging handle. Only 200 rounds through it, minor handling marks, $750 obo.
11 Zytel M11/9 magazines $30 ea obo
6 steel Recon Ord. M11/9 magazines $35 ea obo
Regarding buying the upper and magazines:
For the upper and the metal mags, I'd do is $880 shipped (knocking off $50 on the upper and $5 on each mag, and covering shipping) - priority mail.
For everything I'd sell the zytel mags at $25 ea. ($5 off of each) so $1150 shipped.