The aim of the article is to present the issue of security of production of the arms industry, which supplies equipment and armament to the Polish Armed Forces, the NATO Police and other services ensuring security and stabilization of peace in the country and in the world. The article is of a theoretical and descriptive nature, providing an answer to the question being the research problem of this work: what normative and legal requirements should an arms company meet during the production, control, acceptance and delivery of military equipment, in order to ensure a safe product for the life, health of the user and the environment while ensuring reliability and timely deliveries? The research hypothesis of the work is that it is assumed that the conditions in which metrological confirmations of measuring instruments used to control production at various stages of the technological process are performed may affect the safety of manufactured products and determine cause and effect relationships. To verify the hypothesis and answer the problem question, the following method of source analysis and logical construction was used. Official documents in force in the Republic of Poland were examined: normative and legal acts. Indirect observation was also used, resulting from the authors’ many years of experience in working with the arms industry and participating in scientific activities. The issues presented in the article concern the metrological system that has a significant impact on the quality and safety of the product, the product conformity assessment system (OiB), in which the manufacturer guarantees under his own responsibility that the product complies with the technical specification by issuing a declaration of conformity in the field of Defense and Security and introducing the Internal Control System (WSK) regarding trade in arms and dual-use products as well as services and technologies of strategic importance for state security, as well as maintaining international peace. An important issue for suppliers producing defense products is the estimation and analysis of risks affecting the project/project. Risk management begins at the product planning stage and is monitored by significant organizational units, i.e. design, supply, production, control until the end of the contract. Information from the implementation of risk management constitutes a “mine of knowledge” for the implementation of a future project. Another important aspect included in the article is the protection of classified information and the application of appropriate security measures appropriate to the classification granted. The manufacturer should have an industrial security certificate issued by the Military Counterintelligence Service (SKW) or the Internal Security Agency (ABW) in accordance with the current Act on the protection of classified information.