Advances in robotics and Artificial Intelligence (AI) make utilizing robots in domestic law enforcement and self-defense increasingly viable. As with any set of technological developments, this opens up a space of possibilities for their licit and illicit use and creates a need for ethically-informed, effective and enforceable regulation. What is unique is the technology’s potential to solve a persistent issue necessarily impacting all self-defense and law enforcement executed by humans – the License to Overkill and the Response Time Trilemma. The paper starts by explaining what these issues are and how they thwart our attempts to conform with an ethical ideal of self-defense. It then outlines the particulars of the technological solution and describe its great promise. Finally, possible objections and the regulatory measures that would limit the negative impact of self-defense robots while preserving the social and ethical benefits of their sensible employment are discussed.