Aerotech Adapters for Model Rocket Kit

Ellipticaloptician's Model Rocket kit is designed for Estes C11 and D sized motors. But there are other model rocket motor manufacturers that make 24mm motors the same physical size, but with higher power. One of these companies is Aerotech, who also make a reloadable motor casing and sell the components (grains) to build several different size motors (the casing is re-usable).

These motors, however, use a thrust ring at the base of the motor, near the nozzle that push against the bottom