Check out 1P76 Rakurs Aimpoint Sight Low-poly 3D model on CGTrader for $8. High-quality Polygon mesh mesh by epick: 2433 polys, 2158 vertices. PBR, Textured, UV Mapped.
OBJ (OBJ, filesize: 317 KB), FBX (Autodesk FBX, filesize: 178 KB), PNG (PNG, filesize: 8.03 MB)