$7 Vortex Venom RedDot Optic Low-poly 3D model by Akinaro. Available on CGTrader with 5500 polys and 2800 vertices. Check it out on CGHub.
BLEND (Blender, filesize: 88.7 MB), BLEND (Blender, filesize: 88.7 MB), OBJ (OBJ, filesize: 87.7 MB), FBX (Autodesk FBX, filesize: 87.5 MB), DAE (Collada, filesize: 88 MB)