Cool. I was looking at the exploded picture, it looked like it was a special screw that went thru the entire assembly and threaded together. That's much easier.
The four screw holes in the inner metal shaft are threaded to accept the screws, and one half of the handle has a threaded insert in it at the top.
They were originally held together by five security torx screws.
I used normal brass ones because they looked nice, and I didn't need to worry about anyone disassembling the stick other than me.
I wanted it to come back apart as easily as possible.