I have a new Colt 6920 upper available. New with everything. 16" C MP 5.56 NATO 1 in 7 twist, M203 step down, double heat shield hand guards, side sling attachment, A3 with removable carry handle, M4 marked upper with the RAS markings on the flattop, M16 feed ramps, complete with factory headspaced bolt group and charging handle. $799.00 plus $10 insured shipping.
I also have 2 new M4 complete stocks available. These come with the tube, nut, end plate, spring and heavy buffer. $179 each. $6.00 shipping.