This article examines recent measures undertaken by major commercial banks to mitigate and address human rights risks associated with their financial dealings in the arms industry. By reviewing the corporate policies of 20 leading banks that provide financing to top arms manufacturing and exporting companies, the article provides insights into three significant aspects of banks’ efforts: the development of defence sector policies, the implementation of risk assessments for adverse human rights impacts, and the application of exclusion clauses. These measures highlight the increasing recognition by banks of the need to address the ethical, social and human rights implications of financing arms deals, contributing to the broader regulatory and normative framework governing the arms industry.