After you have constructed a turret and attached a barrel and optionally a mod to it, you may deploy it at your location. You can only deploy one turret at a location, and a maximum of two turrets (with different owners) can be present.

Skill: Turrets
Group: Fabrication
Command: TURRET DEPLOY <TURRET/BARREL> [BODY] [MOD]
Known: No
Lessons: 15 Lessons
Ability type: Combat utility
Can target: Others
Base balance time: 3.00 seconds