Set Screw
Thumb Nut





https://cults3d.com/en/3d-model/gadget/reversible-camera-handle-pistol-grip-handheld-stabilizer
https://www.printables.com/model/324610-photopistol-the-point-and-shoot-camera-grip

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https://cults3d.com/en/3d-model/various/ak-47-vx-grip