Simple Syringe Paste Extruder

This is my first try realizing a syringe extruder.
My first prototype worked surprisingly well but, this is still work in progress and more of quick and dirty rather than good engineering. I hope to make some updates/upgrades but I do not make any promises.
I designed it to fit on my Ender 3V2 with linear rail and dual z-axis mod and I wanted it easily removable so I went for the nice quick tool changer from @properprinting.
There are many other designs for syringe extruders available, some quite good, but I wanted to use not parts, that I didn't already have (syringes, screws and bearings) and fit easily to the printer and tool changer (e.g. I used three gears instead of one very big and one very small).

I included all STEP files, so feel free to modify for your needs.

Materials for printing:
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I wanted to be able to print silicone for some uses at work and try some other things like chocolate (yet to come, including heating/cooling), but you can print many