Turret

Automated Turrets are automatic, unmanned machine guns which are capable of sensing and attacking targets that are hostile to the faction or organization to which they belong.

They are employed by both military organizations like the Enclave or Brotherhood of Steel, and civilian operations such as the Museum of History, though in the latter case their former operators have been long since gone. In one case, a Raider group near the Arlington Library has reprogrammed turrets to protect a camp and a drug lab.

Variants
Automated turrets can rest on the floor or hang from the ceiling. The ceiling turrets use bullet-based weaponry whereas the ground turrets are equipped with lasers. Both variants have unlimited ammo. For conversation and reference purposes, odd-numbered turrets ( Mark I, Mark III, etc.) are 5.56, ceiling turrets while even numbered turrets (Mark II, etc.) are ground-mounted, laser turrets. Turrets can generally be found in large buildings especially in the DC ruins

The Turrets aboard Mothership Zeta are simply known as "Turrets"

The following models exist: There are a few, stat-wise identical versions of each model in the game (with different Base IDs) for different factions.

Appearances
Automated turrets can be found in many locations in Fallout 3 and its add-ons. Mark VII and Mark VIII turrets only appear with the Broken Steel add-on.Mark VIII turrets can be found on top of the chinese refinery in the Operation Anchorage add-on.