I needed a second set of three parts. I have built the holster wall dock plate included here. I will be working on the other two parts and will update this or build new based on what works best.
I chatted with the vendor, but they do not sell the three parts or the screws I needed. I found the required screws at the local hardware store. Used this to learn how to build Fusion 360, still waiting for the printer and will update if additional changes are needed to the model.
Doing some research based on the fill with the slicer, I would recommend doing a 50% fill factor, but any comments are welcome for suggestions.
The author hasn't provided the model origin yet.