Since UC Irvine’s Legacy Robotics will be leaving RM to participate in URC, they have decided to share some of their RM CAD. Here are two of the links to OnShape assemblies they have shared. Hopefully this can be useful for new teams. I will update this thread as they share more.
Turret V2 by Gabriel Jimenez
Suspension V4 by Gabriel Jimenez
I also exported the assemblies in case this cad is ever deleted (may or may not be correct, not an onshape expert.)