Prohibits use of new merchant category code by credit card companies for purchases of firearms and ammunitions.

This bill prohibits credit card companies from using a new merchant category code (a specific identifier for business types) to categorize stores selling firearms or ammunition separately. Instead, such stores must be classified under general merchandise or sporting goods categories, as they have been historically. Financial institutions and payment processors are barred from requiring or assigning a firearms-specific code, and any contract violating this is void. Violations can result in administrative fines up to $10,000 per incident, enforced by New Jersey's Department of Law and Public Safety.