M16A1 rifle parts kit is up for sale, this is everything you will need except the lower.
The lower parts kit is from PSA, only the trigger and hammer were installed once, any other lower parts are in the sealed bags.
For the complete upper, the upper receiver is from Aero Precision, BCG is PSA premium, and the 20-inch 556 pencil profile barrel is from JSE surplus.
I would ship at your own cost.
I'm willing to trade some optics and 556, 9mm ammo. I'm looking for holosun aems, EOTech magnifier, FDE pitsol optics in rmsc footprint(holosun 407k or 507k or eps carry), surefire x300u, surefire scout light in FDE, trade +- cash.
Cash is king.