I'm posting this here because I notice we have some Argon One users.
I made a little platform that holds the FLIRC receiver in a somewhat aesthetically pleasing way. This picture shows my Argon One M.2 but the standard Argon One has the same fitment.
This is an interim solution for FLIRC while I work on getting the built in IR working well.
This part is posted on Thingiverse, if anyone wants it.
FLIRC holder for Argon One Raspberry Pi case by TomB19 - Thingiverse