Source with 2 more turrets: Dieselpunk Turret Weapon Designs (by Tianyi Liu - ArtStation)
All designs share the same bulbous drone-camera-eye motif.
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Looks great. I would add struts going to the “shoulders” of the turret to the weapon though. Something to provide support to side loads. As it stands I wouldn’t trust it to turn and shoot at the same time reliably.