The contact owns a Nuna Car Seat, Model Name: Rava, Model Number: CS05103OXF, Model Type: Convertible, Manufactured Date: January 30, 2021. The contact stated that the harness buckle was easy to release while attempting to secure the child in the car seat. The contact received notification of NHTSA Campaign Number: 24C002000 (Child seat). The manufacturer was made aware of the failure. The contact was informed that the part would be shipped once the part became available. The contact attempted to reach out to manufacturer and was sent to voicemail.