This is a pistol for Mechanic Studio MS-02 Engineer, a third-party Transformers Autobot Huffer toy. The toy has a non-standard 4mm peg hole, which this part is designed to work with.
Huffer is only shown with a gun in the original Transformers G1 cartoon in one brief scene, in the episode "Making Tracks". I based the design of this laser pistol on the handful of frames of animation showing him with the gun - see screenshots.
Photos show my protoypes printed on a Prusa MK3S.
Printable STL files for this item are available for purchase on Cults -
click here.