Requires use of merchant category codes for purchases of firearms and ammunition.

This New Jersey bill (S 3001) requires payment processors (merchant acquirers) to use a specific industry code for firearms and ammunition businesses starting May 1, 2027. It defines "firearms merchants" as businesses in New Jersey where gun sales represent the highest revenue, and mandates that payment processors assign the standardized code established by the International Organization for Standardization. The Attorney General can enforce the law by imposing $10,000 civil penalties per violation, but businesses may avoid penalties by correcting issues within 30 days of notice. The law does not change gun sales regulations but affects how payment processing companies categorize firearm-related transactions.