Growler Class Turret

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The GM-42 "Growler" Class Turret is a dated turret used by the Galactic Federation. Despite its age, it is still considered very effective as a point-defense system. They are lightly armored and are similar to Auto Defense Turrets from Metroid Prime. They can deal a fair amount of damage though can be easily avoided by side stepping. A single Missile or a Charge Beam shot from any beam polarity will destroy the turret. Samus encounters these turrets in the hallways of the GF base in the Temple Grounds of planet Aether. Space Pirates created a copy of these turrets, known as the Humility Class Turret.

In Metroid Prime 3: Corruption they are replaced by the Halberd-Class Turret.