I did take it apart, the piece came out of the handgrip, but after looking at a handful of them on the wall at the regal gun shop in checking them out that little piece was nowhere to be found. I fooled around with one, with one of the salesman, and still that little bugger was nowhere to be found, one Im working on did not come with a manual, did watch a Hickok video about it,he never made any mention of the sight tool. It's definitely a tricky rifle to figure out but once you do and get a broken down and put it back together a couple of times everything seems to fall into place perfectly.
I did find the sight tool for the 160 as shown below:
this thing is def a sight tool for the front sight, the one side works for the post the other is for pushing the lock that allows it to flip up and down.