no legal issues, it has been done. Neat idea but probably not the most practical tool.

What if you got a Serbu super shorty 870, Its classified as AOW. Would the legal issue change if its mounted to another weapon?

you mean something like this?
http://tntarmoury.homestead.com/tnt1.html
Shotgun barrel less than 18" is AOW and would require the tax regardless of what it is hooked to.

Ok.. so i have this hairbrained scheme, and it'll work.. I can make it fit, a 18" barrel Rem 870 (has an 8 inch reciever) making it 26" overall and attach the rails to a quad rail.. should mate up nicely to a 20 inch, or a little short on an 18 inch AR.. .

My question is.. legality issues anyone? I don't know and i hate reading ATF legalese.

From what I understand the way they get around the short barrel shotgun is because they buy a model from Remmy or mossberg that only comes with a pistol grip. Just like an AR pistol there would be no restrictions on how long the barrel has to be. When you mount it to a AR rifle then it has a shoulder stock and would fall under the SBS definitions.

I beleive there is no such thing as a shotgun "pistol" A shotgun has to have an 18 in barrel, unlesss the barrel is rifled, then it can be 16 inches.

I have always been under the impression that pistol grip shottys still have to have an 18 in barrel. Even if they came from the mfr like that.

Didnt know you were talking about the Super Shorty. I think its the VFG that makes it an AOW.

(d) Shotgun. -- The term "shotgun" means a weapon designed or redesigned, made or remade, and intended to be fired from the shoulder and designed or redesigned and made or remade to use the energy of the explosive in a fixed shotgun shell to fire through a smooth bore either a number of projectiles (ball shot) or a single projectile for each pull of the trigger, and shall include any such weapon which may be readily restored to fire a fixed shotgun shell.

(e) Any other weapon. -- The term "any other weapon" means any weapon or device 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, weapons with combination shotgun and rifle barrels 12 inches or more, less than 18 inches in length, from which only a single discharge can be made from either barrel without manual reloading, and shall include any such weapon which may be readily restored to fire. Such term shall not include a pistol or a revolver having a rifled bore, or rifled bores, or weapons designed, made, or intended to be fired from the shoulder and not capable of firing fixed ammunition.

Only thing about that is Im pretty sure a shotgun CANNOT be clasified as a pistol. Its either a SBS or AOW.

Only thing about that is Im pretty sure a shotgun CANNOT be clasified as a pistol. Its either a SBS or AOW.