The TASER Cartridge is one of the features that separate TASER products from the competition. With a distance of 15 feet (4.6m), and accuracy that can't be matched, they are the choice for personal protection. TASER C2 Cartridges are compatible with all TASER C2 devices. All TASER Cartridges include a patented Anti-Felon Identification System (AFID) so that each cartridge use can be traced. TASER cartridges utilize compressed nitrogen to propel two darts to the target. This proprietary design leads to increased accuracy and consistency in field use.