Converting it to what? SBR? Sure, you can get the paperwork from ATFE and send it in to register it as an SBR, very popular for that. Some like the various pistol braces available and go that route. I found the Gear Head Works Tailhook to be one of the easiest to use Braces yet, with the folding support arm it has.
If you are talking about converting it to a Dealer Sample select fire as an SOT FFL, no, I don't remember seeing any SOT FFLs who have posted anything about doing that here. I know the select fire version is available through CZ-USA, and is comes in an 11" barrel version, which is the exact same length as the semi-auto civilian legal pistol. It would seem to me to possibly be far more headache than worth it, with the same thing being available to those who are legally able to purchase it now.