Turrets (video)

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Turrets is a video which was released by Valve on April 5, 2011 in order to promote Portal 2. The video takes the form of an Aperture Laboratories investment opportunity video, and uses a combination of Aperture Science's hallmark animations and pre-rendered footage in order to showcase the consumer version of the Aperture Science Sentry Turret.

"Turrets" Video Transcript


  • Although Cave Johnson's statement that Turrets "fire the whole bullet" may seem nonsensical, the video demonstrates that they do indeed fire the entire bullet. Instead of striking the primer on the back of the bullet in order to ignite the propellent inside and unleash the bullet similarly to traditional firearms, Turrets fire bullets via a pair of spring-loaded hammers that propel the entire cartridge out of the barrel. This also explains why Turrets don't eject any spent cartridges when firing. However, this does not explain why the in-game turrets have an explosive effect when bullets are shot, as there is no propelling explosion within the turrets.