A/C Cabin Vents Remove/Replace

I have access to a set of 4 carbon fiber A/C vent rings (the collar that rotates to open or close the vent) for my 2013 Cali-30 and I'm trying to figure out how to remove and replace them. I'm hoping either the ring or the entire vent assembly can simply be pulled out like any piece of interior trim, but I don't want to damage anything. Has anyone ever done this or know how to do it? Thanks.