This case snaps on to the Rek5Lab 3 antenna board such as the one found here:
https://www.tindie.com/products/rek5lab/flipper-zero-marauder-esp32-cc1101-nrf24l01/
The fit is snug, be careful not to break off fragile components when pressing the board into the case, especially careful of the BOOT & RESET buttons.
The switch is a bit tricky to get into place. I do it with that side of the board popped out just a 1mm or so, fit the hole around the switch, then press in the board.
Print Settings:
The author marked this model as their own original creation.