FlipTarget is a really simple shooting gear. It flips when the bullet hits target circle. To use second additional revolving mode you need to 3d print the base or settle it on the metal rod with diameter smaller than 4mm.
Layer Hight: 200-300 microns (0.2 - 0.3 mm)
Infill for base part with 50 - 100% infill in order to increase weight.
Material: ABS/PLA but much better (stronger) would be PETG or Nylon.