They're developing it. It involves permanent modification to the shotgun, not a good idea in my opinion. I'm waiting for the centerfeed version myself. It would make a sweet tac shotgun... Though I don't know if I'd give it the place of my Mossberg 590... We'll see.
And BattleRifle's obligatory freakish conversion. It was suggested on Gunsnet, and I think that the real advantage of this system over a tube fed pump is that you han have 10rd with as short a system as will work. Like this AOW concept:
Considering that you, LD, Tea, myself, and probably a few others are also on ak-47.net, and I see some similar posts when we're fielding certain ideas or getting info, it shouldn't be surprising. Course I think you got the idea of using gunsnet smileys from me.
A forum community dedicated to hunters and enthusiasts. Come join the discussion about optics, trails, clubs, gunsmithing, styles, reviews, accessories, classifieds, and more. The friendliest gun forum on the Internet!