“The Machine is a CNC Mill, not a printer.”
And marketed mostly to people who don’t know all you need to finish a 80% lower is a drill press.
Is it at least a printed CNC mill??
You can make a 100% receiver ONCE legally, but you can never sell or transfer the gun.
And, as I understood the article, all the device does is finish an 80% lower via dedicated CNC.
This is NOT the “holy grail” of “insert a block of steel, functioning gun emerges (some assembly required)”. You still need 100% of barrel, upper, stock, shroud, gas impingement, bolt, trigger complex, and a bunch of other stuff PLUS the 80% complete lower which this device does the remaining 20% on ... _then_ you have to competently put it all together, hoping all the tolerances & finish fit and function well. This is a specialty hobbyist’s tool, nothing more - nigh unto NOBODY using such a weapon in earnest for any reason would use this device to make it.
You need more than a drill press unless you are EXTREMELY good at operating it. The 80% lowers sold today have the trigger well solid.
Well, ... I know a guy who tried this. When the end mill slipped in the inexpensive drill chuck, the lower was ruined before he realized what was happening. There are probably some drill presses which are suitable, but many inexpensive ones are not.