Investors are increasingly considering environmental, social, and governance (ESG) factors in their decision-making processes. It is crucial to accurately assess exposure to controversial weapons and understand a company's involvement. Investment firms like Rothschild & Co and Amundi have documented their approaches to controversial weapons, emphasizing transparency. After assessing exposure, implementing ESG best practices and engaging with companies can mitigate risks. Institutional investors play a significant role in influencing corporate behavior. A comprehensive strategy documented in an investment policy is important. Leveraging resources and fine-tuning investment practices contributes to a sustainable and responsible market.