Automatic and mathematically efficient - that's what matters most when it comes to automated Sentry Guns. They can be placed anywhere in matter of few minutes and will keep firing at terryfing rate with inhuman accuracy until there is no movement in their line of sight. If you are not friendly - you are dead.

Famous robot sentry from "Aliens" movie is finally available for AVP players as an add-on. Automated gun nests can be placed anytime in any place which extends game in whole new direction.