Gundam Gunpla Universal Base Adapter - 1/100 MG

This is a GUNDAM ACTION BASE ADAPTER designed mainly for 1/100 Master Grade models, preferrably large models like:
1. Solomon - Physalis GP02
2. Narrative Gundam Ver. Ka
3. Sazabi Ver. Ka
4. And can also work on normal models that are not listed above, but fitting may be loose or too big.

This action base adapter is meant to be used for an existing 3D Printable Gundam Base from: 
https://www.printables.com/model/143713-1100-scale-mg-gunpla-model-base

See photos attached for final result.