The company behind this push is the company PRINTANDGO AM SOLUTIONS SL in Spain.
They describe their surveillance software in this blog post: https://printandgo.tech/blog/3d-gunt-solution-to-prevent-3d-printed-ghost-guns
And of course they are lying in the blog post, claiming that you can manufacture guns just with a 3d printer. No this is not true. It's way more complicated in reality.
3D printed guns are mostly a US thing because of the quirks of US gun legislation where vital parts are easy to buy without paperwork.