>>64159409
>Surely you can do the same to a break action that was done to the Mossbergs that I can't remember the name of ATM?
Shockwave. The shockwave and similar "just a firearm" guns need to be over 26" overall to avoid AOW status. Thing is, a normal break action without a stock has less than eight inches of non-barrel. >26 - 8 = >18.
So now we're talking about a barrel length and overall length combination that is legally accessible conveniently by modifying shotguns. So there's no particular demand for the configuration as is from the factory, since any off the shelf break action shotgun can scratch your itch with a hacksaw/gunsmith.
But if you want under 26" overall, then that's NFA item territory. As an AOW, you can disguise it later if you want, or as an SBS, you can put a stock on it later if you want.