the Max M3 motor is built to last and push the limits of your airsoft gun. The magnets in this motor produce a higher amount of torque needed to handle stronger springs like an M130 or M140 used in DMR builds. The CNC housing is precision produced to have no harming interference with the function of the motor. The motor utilizes high resistant neo magnets known for being one of the most rare powerful magnets in the world. This allows for smooth pinion rotation with extreme strength to power a gearbox.