My son ruined the trigger of the remote control for his 1:24 Revell Chiron model.
This remote controll seems to be widespread... so maybe someone might find it useful.
Printed in PETG with 100% infill and support.

Hint: There are 4 screws to open the remote control.
One is buried under the red side panel! You can pry it off very easily.
To get the old trigger out and the new in you have to loosen the screws of the PCB too.

In the picture there is an older version built into the remote control.
Notice the screw hole underneath where that little red panel usually sits.
The thingy you get here is the one next to the ruined original trigger.