Hiya KenH Hou and thanks for your thread,and see that being brand new to the forum a warm welcome from phoenix arizona. Happen chance or not I think you have a good shot at finding some help here in the days to come. Kinda sucks to have it be the weekend tough getting a company rep on the phone then. Next week a shout out to cz usa's toll free number should help, I'd suggest asking to speak to a cz gunsmith first and go from there. You may need to be transferred to another dept,such as LEO/Military.
At the cz usa web site,if ya read in the description for why they developed the Scorpion EVO lll S2 Micro, and when they needed a can to match it,they could not source it in the marketplace. That required cz to make the decision to make it themselves,they had to team up with Aerocharger and created the CZ S2 Ti Reflex for the Micro,as well as another model just to meet demand at another price point.I will be interested to see if Micros owners using a cz-usa can have similar issues.
I would think that the company has fielded questions from operators trying to adapt other cans that were not specifically built for the Micros,and if they can't help can make a good reference. And of course I'd also try to drop an email and phone call to Advanced Armament Corp,the creators of your, no pun intended, Rant. Again welcome to our humble cz community. Be well.