The Am’D PIN-LOCK asymmetrical aluminum carabiner is designed for use with groups. It secures the connection of the participant with a PIN-LOCK system, which can only be opened by the operator with a specific unlocking tool. Am’D PIN-LOCK may be used with a CAPTIV positioning bar to promote loading of the carabiner along the major axis, to limit the risk of rotation, and to keep it integrated with the device.