Black Widow Tenkeyless hotswap

How can you tell if a Tenkeyless has hot swappable keys.  It’s long out of any sort of regular support so I do not expect Razer to fix it.  I would like to know if the W  keyswitch can be changed out and how I find out the keyboard supports hot swapping.  There are no visible screws to just open it up and before I go ripping into it I want to be sure I can fix it.