2 TASER 15' Replacement Cartridge Works with the C2 series TASER products Only. 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. The TASER 15' Cartridge is compatible with all X26C and M18 TASER devices. TASER C2 Cartridges are compatible with all TASER C2 devices. All TASER Cartridges include a patented Anti-Felon Identifcation System (AFID) so that each cartridge use can be traced. TASER cartridges utilize compressed nitrogen to propel two darts to the target. This proprietry design leads to increased accuracy and consistency in field use.