You make the statement that they are using a larger barrel extension. Assuming this resulted in a need for a larger barrel nut, do you know if they were at least smart enough to make the barrel nut and upper threads to match one of the available AR-10 type rifles? I fear another Pro Ord/Bushy Carbon 15 SNAFU where as NO aftermarket forends (among other parts) will fit this factory rifle. At least they started with a free float forend allowing some potential for accuracy, unlike the C15's.
It sounds like they at least got most of the other parts to be "common" interchangable.
Do the WSSM Olympics use commonly interchangable parts or are there other non-standard items in those uppers?
B
