Got my new 6mmAR upper today from Robert Whitley. I have to say it is everything I was hoping for and more. His quality and workmanship are second to NONE. The fit is very tight when joining it to my RRA lower, cosmetics are fantastic, and I'm sure it will shoot as good as it looks. I would reccomend him to anyone interested in the AR 6mm game. I will be loading for it until the week-end and hope I get to shoot it Sunday if not before. I will keep ya'll posted as I crank it up. Right now, I think I'm going to check a few bullets for seating depth. Bill