| CPC F41A 17/06 (2013.01) [F41A 19/60 (2013.01); F41G 1/345 (2013.01)] | 18 Claims |

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1. A method of showing a power state of a gun, the method comprising:
determining, at the gun, a battery power level representing an amount of charge remaining in a battery of the gun;
selecting a color that represents the battery power level;
generating, at a light-emitting diode, a solid light pattern to indicate that the gun is receiving power;
determining, based on a charge sensor, that the gun is receiving power from an external power supply; and
generating, at the light-emitting diode, a flashing light pattern to indicate that the gun is receiving power.
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