From Ammoland:

As a result of the passage of the Bipartisan Safer Communities Act (BSCA) of 2022, the NICS Section has been working towards the implementation of an enhanced background check process for persons between the ages of 18-20.

The enhancement provides the opportunity for additional outreach and research to be conducted regarding the existence of any juvenile adjudication information and/or mental health prohibition. As a result, transactions on persons between the ages of 18-20 will initially be delayed allowing for the additional outreach. To conduct this outreach and research, the address of the individual will be collected so that the appropriate local law enforcement entities may be contacted.