Someone posted asking about where to find an AT-ONE. I had several great experiences with Whittaker Guns several years ago (while working through an episode of CZ-fever) so thought I would pass it along as a possible option for the OP. It has been a while since I did any business with Whittaker Guns so am not sure if others were expecting this, but they used to have a great stock of CZs and all of my transactions with them occurred without issue.
Anyway, here is an article on the situation from a local news source if you are interested in reading it: Whittaker Guns closed; OT source says it's for good - The Owensboro Times
Anyway, here is an article on the situation from a local news source if you are interested in reading it: Whittaker Guns closed; OT source says it's for good - The Owensboro Times