It is not a pistol in Indiana. If the barrel is >18" and the OAL is 26" or greater,then it is still a shotgun (or long-gun), no if's and's or but's. If you add a forward grip to such a shotgun, then it is not an AOW, it is still a shotgun. Indiana does not allow short barreled shotguns, but AOW's are OK. The difference being, that AOW's started life as shotgun receivers without shoulder stocks attached. If they were born with stocks, then they can only be converted into SBS's.At least here in Indiana a mossberg 500 with a pistol grip in the rear is considered a handgun. If I put my Knoxx Sidewinder 10 round drum conversion on it there is a front pistol grip that attaches to it. Does it now become an AOW????
And I thought I would add that I think SBR and SBS are a waste of a $200 tax stamp.
There is possibly a state ruling that PG shotguns have to be sold as pistols.