Anyone done a 6 ARC SCAR yet? Seems like the beefed-up SCAR bolt would do wonders compared to the more fragile retrofit design of forcing a standard AR15 bolt to accommodate a 6ARC case. While the JP one (pictured on right) does fine in one of my 6ARC builds, it clearly not designed for that large of a case head. Certainly, no engineer would design it like that on purpose.
On the other hand, the SCAR 16 is massively overbuild for 5.56 (as it was designed with multicaliber geometry in mind that never manifested as the SCAR 17/20 took over all the work), and seems like at the 6ARC case head dimensions it would be perfect. The SCAR also already has steel side rails inside the receiver for the cam pin, much like Geissele's SOCOM offering, intended to alleviate excessive wear from a larger-than-designed cartridge adapted to the AR platform.
