KA-50s Low-poly 3D model is available on CGTrader for $15. Original author: juri-posadov. Specs: 15063 polys, 17270 verts.
BLEND (Blender, filesize: 2.71 MB), OBJ (OBJ, filesize: 2.37 MB), FBX (Autodesk FBX, filesize: 1.05 MB), MAX (Autodesk 3ds Max, filesize: 4.53 MB), TEXTURES (Textures, filesize: 13.1 MB)