Unless they start making a few that are closed-bolt, don't get your hopes up for the civillian market. Too bad, I always liked the looks of the Atchison. I can remember reading magazine articles about it when I was ten or eleven years old, with a picture of a Marine Sargent emptying a drum while holding it single-handed to demonstrate the controlability. Even if it were made in a closed bolt configuration, I believe the Atchison design is classified as a Destructive Device and so goes along with all the title II firearms BS.
The Streetsweeper is the first commercially available automatic shotty; it was pretty darned awesome.
and how many Saiga 12's could you buy for that ? Well there is always the Saiga 12 gauge with the 20 rd drum. Not FA but hell, I've always preferred aimed fire with a semi-auto myself. Saiga 12 Winchester Universal 200 round dump - YouTube screw it! If you can get the stamp for it. It's a 12ga AK platform so you can go full Auto! 30rds in 3ish seconds!! Alliance Armament 30rd Drum (Saiga-12)(Full Auto)(SBS) - YouTube
That first guy is toast if there are sprinter-zombies. check this vid out...maybe my memory is failing, but I recall shooting old tires as a kid and .22 bullets just bouncing off...so, I figure bird-shot would do the same. I don't think I'd shoot skeet on his range. Saiga 12 Shotgun 20 Rd Drum Terminator - YouTube!
I have a Saiga 12 and it is BAD ARSE!! I can squeeze off 12 rounds in 3.6 seconds.(target loads) Slugs is a different story. I think the AA12 is designed to absorb more recoil. The AA12 is a refined version of the USAS12. the re loading of the Magize looks kinda awkward, you have to line the magazine up on that rail.
Although it is not an AA-12, there is another contender to the magazine fed semiauto 12 guage market: Akdal MKA 1919 - Wikipedia, the free encyclopedia It seems that Tromix has already begun producing performance parts for it and Firebird Precision has 10 round magazines being produced: Firebird Precision - In the works - MKA 1919 I wonder how long it will take to get someone to make a drum? Krebs Custom Guns has done a really nice SBS job to a MKA 1919. With the retail of this shotgun being $700, I can imagine there will be quite a few of them being sold. They are imported by RAAC, the same people that import the Siaga. This should be interesting.