A system for monitoring a user of a firearm generally includes an inertial measurement unit configured to be disposed inside a grip of the firearm for measuring motion of the firearm. The system also includes an event detection system for detecting a detected event that includes at least one of gripping of the firearm, raising of the firearm, aiming of the firearm, and discharging of the firearm based on the motion of the firearm measured by the inertial measurement unit. The system further includes a communication system for wirelessly communicating the detected event.