This is a reupload of the original “Griff_V1.11.stl” model by Murkur11 which I found on Thingiverse. I haven't actually make any changes except for bringing the original file into Blender to fix the “Error 202 non-manifold edges” errors that was preventing Bambu Slicer from printing it.

It's a perfect replacement for the original handle that broke, so much thanks to Murkur11 for uploading it originally!