I ordered a suppressor for this rifle. Silencer Central could not find what thread it has. I contacted CZ-USA. I didn't have the serial number with me.
The next day I gave CZ-USA a call. After giving him the numbers he said that rifle isn't supposed to be here in the US.
I asked him about the total number of these rifles here in the US. He could not find that info. I know there is at least 2 or 3 of them. There might be a few. But what he told me was that gun is very rare here in the USA.