A sensor system for a firearm is disclosed. The sensor system contains a body, a mounting facility adapted to mount the body to the firearm, a first accelerometer connected to the body operable to generate a first acceleration signal based on detected acceleration of the body, a second accelerometer connected to the body operable to generate a second acceleration signal based on detected acceleration of the body, the first accelerometer operable for detection of accelerations within a first range between a first lower limit and a first upper limit, the second accelerometer operable for detection of accelerations within a second range between a second lower limit and a second upper limit, the first lower limit being less than the second lower limit, and the first upper limit being less than the second upper limit, such that at least portions of the first range and the second range do not overlap.