I just picked up 3 Nordic/Wilson barrels and their matching Corvette Comps...NICE quality. 18" 1:8 twist, SS, and rifle gas system. I am building 3 uppers this weekend using KIES adjustable gas blocks, YHM FF tubes, on Spikes uppers. Hope to get out to the range on Sunday and see how the first one performs..if the wind quits blowing.
Here is what my builds look like and pricing...I am hearing some customers shooting 3.25" groups at 400 yards...with 69 SMK's over Varget...which is impressive.
http://www.nextechclassifieds.com/listings/view/346246/