The Ghost Gunner 3 Zero Percent kit allows you to mill a complete, mil-spec and unregistered AR-15 receiver from an unformed block of aluminum - from 0%.
Link
No prior CNC knowledge or experience is required to manufacture from design files.
With our user-friendly DDCut software, you can mill, finish, engrave, skeletonize and more on any of the platforms below with the touch of a button.
Ok, I see now. Original link for the mill itself only references finishing lowers. Looks like you mill the upper-lower from the billet, and still purchase the lower-lower as part of their kit. Wouldn’t call that 0% just yet, although they claim future releases of model/code/billet for the lower lower and buffer tube adapter (why the wait?).
The second part is just marketing. People aren’t born with prior technical skill, it’s always gained. You don’t need prior wood working skills to make a table, right? Video on their site even references understanding when it doesn’t zero properly and troubleshooting the setup. Again, not earth shattering, but a level of complexity higher than 3D printing. What I see as possibly being over sold, is the “plug and play” aspect. Its probably rather easy with models and stepwise programs they sell/approve, but the “beginner” may be limited to those. To continue the theme, it would be similar to buying a table from ikea (and “building it”). Possible an online community is sharing designs/models that work on the machine as well (working with the basic tooling provided). Design your own? Sure, It’s g-code based so you could definitely fab from your own design, but you would need to be familiar with the mills limitations, as well as the tooling involved. But if you aren’t remotely technically inclined, and are just going to use someone else’s work? What’s wrong with the 80% receiver assuming the ban doesn’t go through? Even if the ban does go through, these types of mills would only supplant that market. Want an easier setup, quicker turn, with lower cost of entry, and even less know how? 3D print the lower and just replace after 600 rounds. I would honestly pay double for machine with larger work space, already include better tooling/clamping, can work steel, and is more “general purpose.” This unit’s capabilities, and it’s marketing pitch, falls somewhere between a 3d printer and fully capable 3-axis mill.
And to answer my own question, they made reference to being on the 6th op with what looked like a 50% complete upper-lower. I also hope they advise the user to break those edges after the part comes off the table. Nothing under .005.”