Bittner M1896 2 versions Low-poly 3D model is available on CGTrader for $14. Original author: Akinaro. Specs: 14200 polys, 7466 verts.
OBJ (OBJ, filesize: 282 MB), FBX (Autodesk FBX, filesize: 281 MB), DAE (Collada, filesize: 284 MB), GLTF (glTF, filesize: 446 MB), TEXTURES (Textures, filesize: 280 MB), JPG (JPG, filesize: 280 MB), PNG (PNG, filesize: 280 MB)