Gun Callibration for Arcade
Before Inserting your credit hold your trigger and pedal (doesn't matter which one) and insert credit to get gun calibration option. You then select which mode you want and gun calibration will pop up. You have a limited amount of time to do this. Follow prompts and shoot okay if you are finished. Press pedal to start over. Highly recommended if you are playing the game in an arcade where the other guns aren't calibrated properly or regularly.