Looking at CZ-USA web shop, they list in the Scorpion EVO section spare mags in 10 round, 20 round and 30 round capacity (not available yet, but you can leave your email to be notified). 30 rounders are only $20.
Adjustable non-illuminated sight set ("gunsmith install recommended", booo).
Double mag nylon pouches, I am sure they fit 20 rounders, not sure about 30 rounders. Mag pouches are only 5.99 each, picture posted is relatively poor, stiching looks uneven. I think these are made by a third party in Czech Republic. I hope they are not low quality cheezy pouches. I will buy a couple and report.
EVO sling is 9.99, also cheap in comparison to other tactical slings on the market. One or two point attachment. It probably attaches at one point to the grenade-like ring on the left side of the receiver. I might replace that ring with something less odd looking, unless designers are smarter than me and it works really well. Would like to see other people's solutions.
Adaptor for the Sig Brace, made by a third party. Wonder how many people will buy that now that ATF forbids shoulder mounting of the brace. Having the brace attached/Velcroed around the forearm and pistol rigidly attached on the other end seems bizzare, unless you are an invalid or a RoboCop. But if you buy and use it, please report. I hope that they are able to import the original stock for SBRs, which looks great.
Someone here bought the Meopta red dot sight. Would like to hear opinions about this sight, Aimpoint and others.