The radio rail will need supports due to the bend in the handle, but the other parts should print fine without as long as you print the files with the recess oriented upwards.
To print on the opposite side, mirror the arts in your slicer software.
Please note the max screw length if you are not using the screws that comes with the FC-50 kit.
The author remixed this model.
Since I have a smaller printer (Ender 3 V2) i split this into smaller parts so they will fit on the print bed.
I then glued them together using CA glue after I roughed the mating parts with a medium coarse sandpaper. Please take care and orient the parts correctly before gluing - I made this mistake…