Establishes registry allowing persons to voluntarily include their names on list of individuals prohibited from owning firearm.

New Jersey's S 590 creates a voluntary "Do Not Sell" registry allowing residents to exclude themselves from firearm purchases. Individuals can register online to have their names added to background checks, preventing gun sellers from selling to them. The registry verifies identities, protects personal information (making it non-public), and notifies pre-selected contacts if someone joins or leaves the list. It does not affect existing firearm restrictions but adds a new self-exclusion option for residents who choose to register.