$8 Laser Sight Low-poly 3D model by n3600. Available on CGTrader with 10100 polys and 9520 vertices. Check it out on CGHub.
OBJ (OBJ, filesize: 366 MB), MAX (Autodesk 3ds Max, filesize: 366 MB), FBX (Autodesk FBX, filesize: 366 MB), 3DS (3D Studio, filesize: 366 MB), SPP (Substance Painter, filesize: 366 MB), TBSCENE (Marmoset Toolbag, filesize: 366 MB)