I already had the lower built. It's an M&P stuffed with RRA NM 2-stage trigger group and finished with RRA-branded Hague grip and Vltor EMOD stock. The upper is a Barrett fitted with a custom-spec'd BHW 16" bull profile with smiley fluting, Midwest Industries modular free float tube, and (if I remember correctly) Wilson Combat LP adjustable gas block. The BCG is a Brownell's match grade fitted with the Type 2 bolt from Tactical Ammunition as recommended by BHW. Love this rifle.
I did have an 264LBC in the LTR barrel profile but Andy saw an issue with it and he swapped it out and I went with the standard profile this time. I'll be using it for deer and hogs. I'll be heading to the range next week for the break in and get it ready for the season in November. I'll let ya know how it does!
Better late than never. 4 shot group at 100 yards using FACTORY Hornady 123gr A-max Match ammo. These were shots 47-50 through the barrel. Measured out at .68x" from a cheap benchrest that isn't very compatible with the AR platform. I'm impressed. Time to start my hand loading.