Fighting Utility Knife 3D model is available on CGTrader for $10. Original author: 3DModelingCorp. Specs: 29040 polys, 29110 verts.
BLEND (Blender, filesize: 299 KB), OBJ (OBJ, filesize: 58.5 KB), FBX (Autodesk FBX, filesize: 102 KB), TEXTURES (Textures, filesize: 36.6 MB), JPG (JPG, filesize: 36.6 MB)