How-to get the MK1 Sentry | Robotics Disposal Grounds | Fallout 4 - YouTube
They want $10 for something thats already in the base game? (robotics expert and robotics disposal ground) : r/fo4
TIL that not only you can activate the Sentry Bot at Robotics Disposal Ground, but you can send it to “defend” several miltary checkpoints all over the map. : r/fo4