MPS Reddot Sight Low-poly 3D model is available on CGTrader for $6. Original author: Akinaro. Specs: 5750 polys, 2915 verts.
BLEND (Blender, filesize: 233 MB), BLEND (Blender, filesize: 233 MB), OBJ (OBJ, filesize: 235 MB), FBX (Autodesk FBX, filesize: 234 MB), DAE (Collada, filesize: 234 MB), JPG (JPG, filesize: 233 MB), PNG (PNG, filesize: 233 MB)