Systems and methods are provided for operating a firearm, including communicating with a connected device via a communication interface, detecting a local energy source in a radio frequency, and harvesting power from the local energy source in the radio frequency via a wireless-energy harvesting mechanism having a receiving antenna configured to receive the local energy source in the radio frequency, a rectifier configured to convert the received signal to direct current, and a DC-DC converter configured to alter voltage of the direct current to a desired voltage.