ACOG Rifle Scope Low-poly 3D model is available on CGTrader for $10. Original author: Antwo3d. Specs: 4548 polys, 2452 verts.
MA (Autodesk Maya, filesize: 1.21 MB), OBJ (OBJ, filesize: 424 KB), FBX (Autodesk FBX, filesize: 170 KB), MAX (Autodesk 3ds Max, filesize: 1.83 MB), TEXTURES (Textures, filesize: 49.7 MB), UNITYPACKAGE (Unity 3D, filesize: 18.6 MB)