This system was designed to work with any 2.75"/70mm rocket system that the U.S. military has in inventory – primarily the Hydra 70 Mk 66. Over time, upgrades have further optimized performance when coupled with the Hydra 70 and its Mk 66 motor, as well as how its sensors and software interact with the Hydra’s M151 fragmentation warhead, M423 fuse, and the M260/261 launcher. However, the incredible adaptability of the APKWS guidance kit mid-body design still makes it highly adaptable for use with other 2.75”/70mm unguided rockets, regardless of the rocket motor design.