High poly and low poly gun-JD8920 Low-poly (Polygon mesh 3D model) is available on CGTrader for $30. Original author: Javad.
OBJ (OBJ, filesize: 54 MB), MA (Autodesk Maya, filesize: 27.2 MB), FBX (Autodesk FBX, filesize: 15.7 MB), GLTF (glTF, filesize: 29.6 MB)