The "Killer Robot Attack Ban Act" establishes a comprehensive prohibition on the manufacture, possession, use, and sale of lethal autonomous weapon systems within the state of Montana. The bill defines a "lethal autonomous weapon system" as a weapon that can autonomously attack targets without human intervention and is capable of causing destruction, injury, or death. It also outlines the penalties for violations, which include imprisonment for up to 20 years, fines up to $50,000, or both.

The act includes provisions for codification into existing law, specifically Title 45, chapter 8, part 3, ensuring that the new regulations are integrated into the state's legal framework. The bill is set to take effect immediately upon passage and approval, reflecting a proactive approach to regulating emerging technologies in warfare and ensuring public safety.