Just got off the phone with them again, and he said that since the units are considered a "conversion kit" that they will not have the bolt carrier group, which I assume means no charging handle. I forgot to ask about the gas system, but would assume it comes with it. He said no bipod comes with it and the whole process takes about two months. He did confirm that it would be a barreled upper with the hand guard, sights and other components attached.
As for the color, he said that he was not sure if the other colors such as green or gray were available or not, but for me to put a request in the comment section when I ordered it, otherwise black. I too am a bit skeptic about the whole thing, as $1,600 still seems too good to be true, as well as the ability to import barreled uppers.