This product includes both pre-supported and unsupported versions for convenience.
compatible with the Heavy Mech Termi Arm Kit - https://www.cgtrader.com/3d-print-models/games-toys/board-games/heavy-mech-termi-arm-kit
compatible with the (Free) Heavy Knight Arm Kit - https://www.cgtrader.com/free-3d-print-models/games-toys/board-games/heavy-knight-arm-kit
It is designed to be compatible with upcoming Termis and Marines.