6mm ARC - AR Build?

Thanks for that info. I've checked every week at Bass Pro in central Florida and as yet never saw any 6mmm arc. I guess, as a first choice for a build in the arc . I'll wait until it becomes common and available..
I have found it at Sportsman's Warehouse a few times, and a few others as well. Scheels just opened here and had a stock of it, but I have seen it at smaller shops too.
 
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