As for extraction issues, I ground a couple of coils off the ejector spring of my Fireball on a Stevens 200. Magazine fed single shot, sorta. I sometimes wonder if a mini-Mauser would work, like a CZ? Love the Fireball, since Lil Gun came out it's been pure pleasure.
And yep, maybe what I would do is cut back one of the 204s to VT or VT AI. That would probably be pretty awesome. Someday......
