I’m not sure why Cz usa would thread their barrels so suppressors made in the USA would require cutting the barrel and threading to 1/2” x 28. I should have dug deeper before buying
Update. Silencer central sells an adapter so a 1/2 x 20 can screw into any of the 1/2 x 28/s they offer. But still, what the heck are they thinking at Cz usa?!?!