Bolder LC40 Switch Issue

I have have a couple of these 18650 flashlights. One of them has an issue with the push button switch. It doesn’t seem to be making contact.

I’ve inspected the unit hoping to find a way to open and possibly repair the switch, but I haven’t found a way to disassemble and remove the switch from the end cap.

Any information as to how to do so would be most appreciated.