This replaces the rear standoffs on the Lumenier QAV-S 5" Freestyle Quadcopter Frame - Joshua Bardwell Special Edition to allow a DJI air unit to be mounted.
You'll need some M3 nuts and snap/melt them into the provided nut cutouts to secure the top and bottom screws. Resulting bracket gives you enough space to mount the DJI air-unit with straight through MMCX antennas.
Result is a tight fit but everything is secure.
STL and OBJ file are included, I ran into some need to repair what OPENSCAD outputted but I successfully printed it with the OBJ file on PETG. I'll probably go back and simply the SCAD output and hopefully end up with a cleaner file.
The author hasn't provided the model origin yet.