I posted this solution to the ARGO system years ago. Both a hand held tool and a Delrin slotted compression pin to release / install the ARGO pin secured in a vise.
The factory tool is does not seem to be as kind as the Delrin and polished hand held tool.
I forgot about the safety spring depressor tool he made too. Here’s a picture of the tools.
Hope he’s doing well. I know he traveled internationally for work.