The TGM-79C GM Canard is essentially a headless GM and its design features an outer layer composed of plastic parts that will weather damage and be cheaper to replace than full metal. The GM Canard can operate on the ground and in space, and its standard weaponry include a beam rifle, a beam saber and a shield. Its cockpit monitor supports both the standard 120° view of early Zeon mobile suits and the panoramic view incorporated into later machines. The GM Canards can be remote-controlled by the TGM-79C GM Cannes using a system termed "Synchro Mode" that allows the instructor/pilot to take control of nearby GM Canards during an emergency.
The TGM-79C GM Canard was one of the primary training MS employed by École Du Ciel along with the older and more standard TGM-79 GM Trainer and the newer TGM-79C GM Cannes. It was also implied that a handful of other institutions similar to École stocked them.
Despite being a test MS and even less suited to combat than the standard GM Trainer, the units of École fielded it in combat scenarios multiple times against Marie Albertia's Pirates. The GM Canard's advantages lie in its internal adaptability, as it was designed for general training, it's fairly high maneuverability (especially in space) and the heavy armor it sports - as it was designed to take severe beatings from students who did not know what they were doing.