FB Radom Ironsights Low-poly 3D model is available on CGTrader for $4. Original author: Sided. Specs: 3879 polys, 1946 verts.
BLEND (Blender, filesize: 279 KB), OBJ (OBJ, filesize: 74.4 KB), FBX (Autodesk FBX, filesize: 131 KB), TEXTURES (Textures, filesize: 22.3 MB)