I figured it would fit pretty well. I am using an Atlas T-bar, I can get 17 to 21 cm by turning the A53M in or out (without having the mic actually touch the T bar, i know...i should get an akg bar). I am gauging this all on a DINA kwon bar I have for the AK40s I have. I plan to use the bar as well for the MK4V KCY set up for stealth on a stand. I know the KCY active will be a little loose in the neumann bar. I plan to use a laboratory grade film sealer called Parafilm and wrap it around the end of the KCY active end that goes into the bar to make up the fraction of a milimeter difference in diameter.
I am not giving you T+ anymore as per your request, and I can't bring myself to T- you either....so I hope a thank you will suffice.