Original design: https://www.rcgroups.com/forums/showthread.php?4223695-Rifter-Sabre-Scimitar-mini-sized-FPV-cruisers
For this servo https://www.amazon.co.uk/dp/B08GX62V3P?psc=1&ref=ppx_yo2ov_dt_b_product_details
The file is for the left lock only. You need to mirror it in the slicer and place it as shown in the image.
The author remixed this model.
The mounting holes were too large for the servo I bought. The designer provided the step file, so it was easy to modify in onshape.