At the same time we bought out complete 6920's for $759, my buddy bought a new 6920 upper for $430 shipped if I remember right, it may have been cheaper. That included the BCG.
I'm gonna say $400 would be a little high but not impossible to get. Might do better on a trade or on a site with a better respect for Colt.
That said, I wouldn't take a grand for mine...
