The gas system has nothing to do with peak chamber pressure and the gas tapped off at the gas port has nothing to do with blowing up a bolt, receiver, or barrel.
The CMP is evidently not concerned about 03 actions handling pressure, because they just told everyone it can handle max pressure. If they were concerned, they would have picked a number below 50k CUP.
I think QBeam was asking about bent op rods, which is not the warning CMP issued.