Not quite accurate.
To manufacture a “Fully Automatic” (Also an inaccurate term.) firearm requires additional machining steps that are NOT included in the standard set of tools and instructions.
ATF are empire builder parasites, they have to create new “Issues” to “Address” in order to justify growing larger.
Any organism that does not grow declines, without growth ATF “Agents” do not move up the Gov. Org. promotional ladder.
The “Ghost Gun” fallacy is ATF and others trying to diminish the 2A.
“Muzzle Loader” kits have been available for decades and still are, with no screaming head-lines or pending legislation that I am aware of.
It’s the prospect of unregistered (Not simple to confiscate) EFFECTIVE arms that scares the seditionist at ATF and in Congress.
Here’s your “not quite accurate”:
https://shop.machinegunguy.com/AR-10-AR-15-UNIVERSAL-conversion-jig-to-M-16-select-fire-AR-UNI.htm