$7 FAB Defense Flip Rear Sight Low-poly 3D model by jackblack1. Available on CGTrader with 1421 polys and 1214 vertices. Check it out on CGHub.
OBJ (OBJ, filesize: 126 KB), FBX (Autodesk FBX, filesize: 201 KB), MAX (Autodesk 3ds Max, filesize: 225 KB), TEXTURES (Textures, filesize: 84.9 MB)