The sentry gun is a gun that is automatically aimed and fired at targets that are detected by sensors. Fictional sentry guns have appeared in science fiction since the 1940s.

Do sentry turrets exist?

The vast majority of sentry guns in the real world are used to protect against missile attacks, and although CIWS systems do exist in science-fiction, the majority of sentry guns are used to defend areas from enemy troops.

Do sentry guns actually exist?

The gun is based on the Samson Remote Controlled Weapon Station. The weapon is capable of acquiring targets and maintaining a firing solution independently, but still requires human input to fire or release ordnance. Dozens of people have been shot with the Sentry Tech system.