LOL....they want your FREEDOM. Wrong to think ATF is worried about revenue.
SBRs have been illegal without a tax stamp for at least 30 years, or close too it.
You can own a SBR, you just gotta pay for it.
It is unconstitutional, yes, but that’s how it is.
Your point is moot since there is no “freedom” at stake here. That was lost in this case years ago.