$8 The knife from the cs go game as promised Low-poly 3D model by artcir311. Available on CGTrader with 5690 polys and 2800 vertices. Check it out on CGHub.
BLEND (Blender, filesize: 1.06 MB), OBJ (OBJ, filesize: 298 KB), FBX (Autodesk FBX, filesize: 117 KB), GLTF (glTF, filesize: 40.3 MB), DAE (Collada, filesize: 269 KB), STL (Stereolithography, filesize: 278 KB), ABC (Alembic, filesize: 289 KB)