Check out Captain Rex Helmet Low-poly 3D model on CGTrader for $14. High-quality mesh by artifactsin3d: 6892 polys, 7027 vertices. PBR, Textured, UV Mapped.
STL (Stereolithography, filesize: 76.8 MB), OBJ (OBJ, filesize: 77.1 MB), TEXTURES (Textures, filesize: 37.1 MB), FBX (Autodesk FBX, filesize: 76.8 MB), GLTF (glTF, filesize: 106 MB), BLEND (Blender, filesize: 391 MB)