I have a factory Colt flat top upper receiver that I no longer need. The unit is in great shape with less then 300 rounds through it. The finish is better then 95% with no signs of scope use on the upper rail. There is no barrel, bolt, charging handle, delta ring, gas tube, or handguards included. This is just the upper with the forward assist and ejection port cover. Great upper to use for an SPR project for an SP-1. Here is the unit:
$325 delivered or trade for Larue 13.2 in new condition.