$15 Magpul AFG1 Low-poly 3D model by olalopa. Available on CGTrader with 3260 polys and 1630 vertices. Check it out on CGHub.
OBJ (OBJ, filesize: 543 KB), FBX (Autodesk FBX, filesize: 135 KB), ZTL (Zbrush, filesize: 119 MB), ABC (Alembic, filesize: 246 KB), DAE (Collada, filesize: 503 KB)