"Steve W." wrote in :

Actually you cannot "sell" a firearm you made yourself.

Of course you can. It appears you need to look up the difference between "can" and "may".

Perhaps you meant "cannot *legally* sell" -- which of course is very different from "cannot
sell".

With certain exceptions a firearm may be made by a non-licensee provided
it is not for sale and the maker is not prohibited from possessing
firearms. However, a person is prohibited from assembling a non-sporting
semi-automatic rifle or non-sporting shotgun from imported parts.

Prohibited. Not prevented.

In
addition, the making of an NFA firearm requires a tax payment and
approval by ATF. An application to make a machine gun will not be
approved unless documentation is submitted showing that the firearm is
being made for a Federal or State agency.

And of course all persons with criminal intent will comply with those requirements, right?