Rifled barrels over .5 inches are DDs. This is simply made as a smoothbore pistol, no problems as long as it has never had a buttstock attached and it was not originally manufactured as a shotgun.
Not quite. Smoothbore pistols are AOW's. This is different.
Not illegal at all, same as an AR pistol. There is no gray area here
Absolutely not. Read Len Savage's letters.
The idea is this:
Factory pistol grip only shotguns aren't actually shotguns according to the 1934 NFA since they aren't shoulder fired. So, shortening the barrel can't possibly result in an SBS unless you install a stock first.
An AOW is defined in part as "capable of being concealed on the person from which a shot can be discharged through the energy of an explosive, a pistol or revolver having a barrel with a smooth bore designed or redesigned to fire a fixed shotgun shell".
Note that there is no restriction on barrel length.
So, then, at what point would shortening the barrel of a factory PGO shotgun result in it being considered capable of being concealed? In the letters above, the BATFE says capable of being concealed usually means an overall length of less than 26", but that such a firearm over 26" could also be declared an AOW if there was evidence of it being concealed.
The point is that this is a completely arbitrary point to make, and that they could reasonably change their mind at any time. And if they do, you are talking a fine up to $10,000 and up to a 10 year sentence. And that's just federal charges. There are still state charges on top of that.
The 14" barrel is pretty cool, but I don't know if it's that cool.