Don't think they've released that info yet. Cz is reportedly working on a 922r package to sell with the stock, as these were
able to be imported as pistols to avoid 922r BS. So it'll be up to the owner to swap out some parts to make it compliant and
then attach the buttstock. Hopefully the price won't be insane!
They've been saying late summer ever since they decided that they would be selling this kit. I would like to see a hard date soon. The kit is listed in their Web Store and I did sign up for email notifications when it becomes available.
I would probably be willing to sell my scorpion brace/adaptor, and 5 additional 30 round mags.... This garage project is running a bit over budget, but is the priority.
Doubt I will separate.... those mags are what will set my sale apart from the rest... you are welcome to buy the whole thing and then resell the pistol and keep the mags though.