Kentucky Armory Club

Looks interesting
http://six12.com/

DESIGN

We are very pleased to introduce the SIX12™. Originally designed to provide a safer, faster and more efficient means of breaching doors, the SIX12™ is a 6-round, 12-gauge, cylinder-fed shotgun that can be mounted to most AR platforms.

Its unique design puts the weight of the gun much closer to the shooter making it much easier to carry and use. The SIX12™ is extremely compact—critical when mounting it under an AR.

Although the SIX12™ was originally developed to improve breaching, its modular design and the ever expanding variety of 12-gauge rounds make it ideal for many home defense and law enforcement uses. Made in the US from US materials.

FEATURES

Compact and attachable to AR rail platforms
Removable 6-round cylindrical magazines
Accepts 12-gauge shells up to 3”
Interchangeable barrel
Double-action semiautomatic
Allows new options for force escalation
Ideal for breaching, home defense, and law enforcement uses

I want one...just because

So does mounting this on an AR make your AR instantly turn into an AOW and then suddenly you're a felon waiting on paper work?

That being said, when will they be available to the public?

I would think mounting the version designed to be attached to an AR would make the shotgun a short barreled shotgun.

I like opening doors and meeting new people. Like Racer said I want one just because....

Yes it require a tax stamp -not sure of which one SBS or AOW
I think Whoots is correct , a SBS.