A single shot firearm that has a 16” long barrel to meet non-SBR status. I don’t know why they even bothered with this. Practicality wise you’re better off with a single shot bolt-action rifle. Ain’t no way in Hell anyone going to think that is a pen. Oh and there is a version with a stock.
“Sir why does your pen have a scope?”
“Dammit I need it for precision signature signing. If my windage is off I can’t cross my “T’s”.