Looking for Red dot Reflex Low-poly? Get this 3D model from n3600 via CGTrader for $10.
MAX (Autodesk 3ds Max, filesize: 235 MB), FBX (Autodesk FBX, filesize: 235 MB), SPP (Substance Painter, filesize: 235 MB), TBSCENE (Marmoset Toolbag, filesize: 235 MB)