From what Ive heard your stamp might take a little bit long to come back because the gun is so new and the 922r BS. But Good new CZ announced that they would be making the folding stock in the US so that would count as a 922r part.
Get one of Huntertown Arms Guardian suppressors, I just got in to suppressors this year and you cant beat them for the price. I got the Kestrel 556 for $477, and their rimfire suppressors start at $199. I love them and you can take it apart and clean it yourself and rotate the baffles to...