Got around to attempting to take the barrel off of the MSR15 Recon. Barrel nut IS proprietary and measures about 29.4mm if memory serves correct.

Savage will not sell a wrench nor will they take off the barrel. I am considering just buying an upper receiver as a host for my WOA barrel (probably the easiest option).
OR... I can see how well a 29mm wrench fits. I bought a 30mm and it is too big.

Any options other than wait to see if someone releases an aftermarket wrench?