Or so the ATF says. (I know Indiana has it's own issues in this regard). So, what is it? If, according to the ATF, it's not a shotgun there are very few things it CAN be. There's some speculation that they're destructive devices. Personally, I think it's still a shotgun, no matter what, but the ATF won't care what I think. Regardless, there's apparently a can of worms out there and they need sorting.
ATF position on pistol grip 'shotguns' creates new danger - National gun rights | Examiner.com
ATF position on pistol grip 'shotguns' creates new danger - National gun rights | Examiner.com