The Mantis X2 is the most powerful training aid for dry fire only practice. The X2 mounts to standard universal accessory rails. The X2 is part of the second generation of Mantis Shooting Performance Systems. The key features of the second generation hardware include: 40% smaller 50% lighter 3x the battery life 4x the data rate Quick detach system Collecting thousands of data points per second, the X2 analyzes your shooting in real-time. For both pistols and rifles, the X2 works with dry fire on your actual firearm. Ships with:Mantis X2 sensorUSB charging cableMantis X2 Case + Foam InsertQuick Start insert