Supported by the doctrine of integral protection and the principle of absolute priority, in 2012, the National Socio-Educational Assistance System (Sinase) was established. Sinase details the procedures and legal and federative powers for the application and execution of socio-educational measures in Brazil. Despite the imminently pedagogical nature of the measures, since 2009, a series of legal initiatives have emerged that aim to regulate the use and carrying of weapons by socio-educational security agents. That said, the present work aims to analyze, in the light of critical perspective of the Theory of Deterrence, how the national scenario of arming agents. It emerged from the analysis that the professional category of socio-educational security agents justifies the need to use and carry weapons as a deterrent strategy for the misdeed and necessary to protect their physical and psychological integrity, and these justifications are also diffuse and not supported by empirical evidence.