Further development is in V4 https://www.printables.com/model/231089-customizable-stacking-loading-block-v4 or https://www.thingiverse.com/thing:5418495 .
This is a customizable reloading block. This is a remix of Customizable Reloading Block ( https://www.thingiverse.com/thing:4830571 ) by Jonathan Maia https://www.thingiverse.com/ambulancedriver2/designs.
New Features:
Category: Tools
The author marked this model as their own original creation. Imported from Thingiverse.