I picked this up a few months ago for a build, and just now got around to installing it. I like the look of the rail...feels great in the hands...just doesn't balance as well as I would like with my setup. This is practically new...barrel nut was installed on upper, and the rail was simply placed on the nut, but never fastened down. Aside from that, it has never been used at all.
Thread here with pics from other users...here
Can provide pics upon request...$150 shipped to your door