Hardware

Official Assembly Guide, BOM, Model and Printable Parts

The Fusion360 models, Assembly Guide and BOM are the official, master copies maintained by Tony Akens. Thingiverse project is also maintained by Tony Akens.

Guides

Fusion 360 Models

Bill of Materials

Printable Part STLs

Additionals Guides and Sourcing Info

RailCore II kits and products

While RailCore II is an open-source project, there are various companies that deal with RailCore II kits and parts.