The Samsung SGR-A1 is an autonomous, stationary robotic sentry gun developed for the South Korean military to guard the Demilitarized Zone (DMZ) with North Korea, integrating surveillance (cameras, thermal), tracking (laser rangefinder), and weapons (K-3 machine gun, grenade launcher) in one unit to detect, identify (voice recognition), warn, and engage threats, capable of autonomous or remote operation. It aims to enhance border security, replacing human guards in harsh conditions with features

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Everything We Know About Samsung's Machine Gun Robots - SlashGear