I don't believe its for a machine pistol, its for a longslide or "tactical" 75B;
you buy a 6" barrel from CZ, have a gunsmith shorten and thread it to the suppressor specs. You are limited, though, as a CZ barrel is not a "thick" as a SIG or HK. a 1/2x28tpi ( a standard suppressor threading) is even iffy and has to be done correctly, seating the barrel properly in the suppressor mount.