The Graviton Ray Turret is a base energy weapon. It is the second base energy weapon available for research. They fire single laser bolts at their targets at medium range. They are relatively uncommon even amongst low/mid level players.
The Graviton ray turret are quite light, combat modules can equip more armor and shields. They have more range than the Thermal ray turret, but significantly less firepower, they can miss their targets frequently at maximum range. Its range can be increased to 7250 metres, in comparison to most weapons of its range, they have a minimal range - the Graviton ray turret does not, making it perfectly capable of attacking targets at point blank range.
They however have significantly less firepower than other turrets, they are not the most ideal weapon against destroyers. Destroyers equipped with Mass drivers or Siege drivers can out range Graviton ray turrets. Cruiser decoys that enter its firing range often are too heavily armored and shielded to be destroyed by these turrets, particularly at high levels.