The Britnerf designed MOSFET board is a lovely piece of kit, but I didn't like the idea of having it loose inside a blaster, so I remixed the battery cover board so that it will hold a Britnerf MOSFET board in place inside a Stryfe.
Just like the original board you can glue this in place but there is also a screw hole to help keep it in place and you may get away without needing to glue it.
Simply pop the board into the little gap made in the print, you may need to flex the print a little bit to get it in place.