Portal 2 - Series 2 - Mini Sentry Turret - 12 Count Display Box Aperture Laboratories proudly introduces the consumer version of its most popular military-grade product- the Aperture Science Home Safety Turret! Previously only used in testing facilities, these turrets are offered in 10 different decorative patterns to provide discreet security in a variety of environments. The Portal 2 Sentry Turret Collectible Figures are available in a 12-count Counter-top Display. Featuring an Open and Closed versions of each of 10 different decorative patterns sold in individual blind booster boxes.