Geth Turret

Geth Turrets or Geth Heavy Turrets are turrets that are deployed by the geth to reinforce their positions or defend key areas. Geth turrets are comparable to other turrets but appear differently than other types of turrets.

Geth Turrets are encountered during the mission to Noveria. Shepard and the squad have to fight through several turrets in order to get to Peak 15 from Port Hanshan.

During a seperate geth incursion into the Armstrong Nebula, Shepard and the squad have to fight through a few turrets in order to destroy the various geth bases that have been established in the cluster.

Tactics
Because the turrets are very powerful it is advised that you take them out from a distance. Also note that turrets are stationary, they are easy to hit with the Mako's main gun. A few shots from the main gun and a few blasts from the Mako's machine gun should be able to enoguh to take them down. It is advisable that you stay in the Mako for the fight because just one hit from the turret can kill you if you are on foot.

If you are going to fight them on foot, then keep on the move because just one shot can kill you. Also because turrets have a habit of firing so that multiple shots that all impact around the same time, getting hit with multiple shots is not good for your health. The best solution for fighting them on foot is to whittle them down while you are inside the Mako, then exit them and destroy them on foot for the exp bonus.

Also note that because the Geth Turrets are stationary targets, biotics are almost useless against them. Only powers like warp are effective.