I was on the MCAce website looking at their chamber adapters, and I see they have one advertised to go from .22wmr to .22lr. I've tried to contact them multiple times, with no success. Anybody have any idea how they work or what they look like? I can't figure out how they'd do it. Is it like the .30-06 to .308 bushings for Garands etc? I'd like to turn some if I can find specs.