Abstract: Generally, a device for counting used munitions may include at least one sensor and at least one processor attachable to a firearm. The sensor(s) may be configured to generate at least one sensor signal, having signal values, in response to movement of at least one of: the firearm or at least one movable member of the firearm. The processor(s) may be configured to receive the sensor signal(s) from the sensor(s), and to detect, based on the signal values of the sensor signal(s) and a predetermined signal threshold, a discharge of the firearm. The processor(s) may be configured to determine a number of remaining cartridges in a magazine of the firearm, based on the detections of the discharges thereof. The device may further include at least one indicator configured to generate at least one notification concerning the number of remaining cartridges in the magazine.

Abstract: Generally, a device for counting used munitions may include at least one sensor and at least one processor attachable to a firearm. The sensor(s) may be configured to generate at least one sensor signal, having signal values, in response to movement of at least one of: the firearm or at least one movable member of the firearm. The processor(s) may be configured to receive the sensor signal(s) from the sensor(s), and to detect, based on the signal values of the sensor signal(s) and a predetermined signal threshold, a discharge of the firearm. The processor(s) may be configured to determine a number of remaining cartridges in a magazine of the firearm, based on the detections of the discharges thereof. The device may further include at least one indicator configured to generate at least one notification concerning the number of remaining cartridges in the magazine.