Sig Sauer Romeo5 Red Dot Sight 3D model is available on CGTrader for $15. Original author: RedWireframeStudios. Specs: 16973 polys, 8916 verts.
BLEND (Blender, filesize: 42.3 MB), OBJ (OBJ, filesize: 358 KB), FBX (Autodesk FBX, filesize: 734 KB), DAE (Collada, filesize: 581 KB), TEXTURES (Textures, filesize: 129 MB)