Sentry Gun
The Sentry Gun (also Gun turret) is a trap that first appears in Tomb Raider III. It returns in The Last Revelation, Chronicles and Tomb Raider Legend.
In Tomb Raider III they are used in Nevada to protect the Military Base. These turrets are ceiling or wall mounted. They are triggered by Lara walking into lasers, shooting at it or manually by a member of the Military Police that has spotted the intruder. After it's been triggered, the turret will start shooting once Lara is in the gun's range. Some sentry guns can be turned off by a switch.
In The Last Revelation Lara comes to Cairo where the SAS have set up Sentry Gun traps. These sentry guns have a sensor that recognizes when a target is in front of them. They cannot spot a target behind them. If the sentry gun recognizes a target in front it starts its automated machine guns. If the target it close, it will switch to a flame thrower. The sentry gun can be destroyed by shooting at a red marking on its tank, probably loaded with whatever it uses to fuel the flame thrower. It will explode.
In Tomb Raider Chronicles gun turrets are mounted on the walls of the VCI Headquarters. These are triggered by VCI Workers or VCI Guards when they spot Lara.
In Tomb Raider Legend Lara will find a gun turret in the penthouse of Shogo Takamoto. The gun will only shoot Lara while she touches the lasers placed in front of it. Lara can do nothing but shield herself by using a giant movable ball.
