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Visa Warns Merchant Codes Won’t Show Customer Gun Purchases

A salesperson shows an AR-15 rifle to a customer at a store in Orem, Utah.

A salesperson shows an AR-15 rifle to a customer at a store in Orem, Utah.

Photographer: George Frey/Bloomberg
Updated on

Visa Inc. warned a new system that gun-control advocates are saying will limit mass shootings might not have the desired effect. 

Earlier this month, the International Organization for Standardization approved a new merchant category code, or MCC, that banks will use when processing transactions for gun and ammunition stores. Gun-control advocates were quick to celebrate the move, arguing it would help banks flag suspicious activity at these retailers.