An adaptation of Matt3ry's Dranzer Spiral for the Burst System.

To assemble it you will need:
-1x Spring (It pushes the Burst System's Lock

-2x Small nails with a round-head (For holding the driver together, like the picture)

-1x Small Spring (for the switch tip)

-1x Blue filament strip 

This one is a bit trickier to assemble:

• Stick together both tip parts.
• Straighten up the Blue filament.
• Stick the blue filament to the bottom of the T-Shaped driver piece.
• Insert the Tip in the bottom part of the driver and add the small spring. 
• Assemble the top part of the driver (The Burst System).
• Finally, heat the nails and stick everything together.

If everything went smoothly, you should now have the switchable mode driver. 

You could also use super glue instead of the pair of nails, but It won't be strong enough for some matches. I personally used PLA for this print, and it didn't break after many battles.