[robertpaulsen]

"Actually, short barrelled shotguns WERE used extensively during WWI"

How short?

[dcwusmc]

Not sure 100% but that doesn't matter a lot, because, the 2nd protects an INDIVIDUAL right which is far broader than the "civic purpose" example given in the prefatory statement. (Which is in and part of Parker, by the way. Have you read it yet?) So at some point (the sooner the better) NFA '34 is gonna go bye bye for being the unconstitutional power grab that it was.