JetBeam PA10, PC10 & PC20. Anyone ever mod one of these?

I was going through some older lights, JetBeam PA10,PC10 and PC20.

These are heavy duty in construction, and I was looking to upgrade them. Maybe just newer XM-L2 noctigon swaps, maybe a FET driver.

Has anyone ever done anything with these lights? The lens and reflector must push out the back, but I can't figure out how to get the driver out without destroying it.

I'd like to see the pill, as the bodies are super heavy and might be fun to tweak.