Butterfly Knife CS GO Knife Low-poly 3D model is available on CGTrader for $2. Original author: nspez.
BLEND (Blender, filesize: 3.53 MB), BLEND (Blender, filesize: 3.53 MB), OBJ (OBJ, filesize: 1010 KB), FBX (Autodesk FBX, filesize: 444 KB), DAE (Collada, filesize: 1.63 MB), STL (Stereolithography, filesize: 586 KB)