Now the motor can be added to the pistol grip. Make sure the spring is attacked to the front of the motor.

Look for the positive symbol on the top of the motor. This represents the positive connector tab right next to it and should be facing the front of the gun as shown, when it is placed into the grip.

With the wiring tucked in back of grip slide the motor in. If installed correctly the motor should move up and down smoothing and bounce when the motor is pushed down and then released.

You can now connect the wiring to the motor first start with the negative/black connector then the positive/red connector. The red goes with the positive symbol.