farmerj wrote:But with rulings, court decisions and the other definitions. It's not an area I'd care to suggest anyone would want to be a test case for.
Because doing so, puts you within the realm of dealing with the complex world of NFA weapons
I deal in this complex world every day, and while it seems confusing, it can be understood! No restriction at the federal level is placed on the maximum barrel length of a pistol. No paperwork is needed to make a pistol from an AR lower provided none of the components was every used in rifle configuration, but it should be emphasized that that this includes the upper if it was shipped on a rifle or ever used in rifle configuration with butt stock.
As of July 25th of this year, the BATF has issued a detailed ruling on what constitutes manufacture of a SBR or intent to manufacture by proximity. This also addresses the earlier question about the T/C rifles and pistols in particular.
http://www.atf.gov/regulations-rulings/ ... 2011-4.pdf