the dome M uses many of the same parts as the normal model M. You can even convert it without too much trouble.
The case, controller, plate, membranes are all the same. I think the barrel frame is as well. So if you bolt mod, you can replace the dome sheet with hammers and replace the keycaps with spares from an M. Or use it as parts.
or just type on it, plate mounted domes aren't that bad, imo.