Embodiments of the present disclosure relate to recording devices coupled to guns that are configured to record events. In an embodiment, a gun-mounted recording device comprises: a sensor configured to: sense the gun is in use; and send an activation signal to a recording device in response to sensing the gun is in use. Further, the recording device is communicatively coupled to the sensor, wherein the recording device is configured to: transition from a lower-power state to a higher-power state in response to receiving the activation signal, wherein the recording device records wherein the higher-power state; and record at least one aspect of the gun's environment in response to transitioning from the lower-power state to the higher-power state.