Check out Gatling Gun Low-poly 3D model on CGTrader for $12. High-quality mesh by Antwo3d: 5771 polys, 6525 vertices. PBR, Textured, UV Mapped.
MA (Autodesk Maya, filesize: 2.17 MB), BLEND (Blender, filesize: 2.86 MB), OBJ (OBJ, filesize: 1 MB), FBX (Autodesk FBX, filesize: 2.35 MB), MAX (Autodesk 3ds Max, filesize: 3.54 MB), GLTF (glTF, filesize: 14.8 MB), UNITYPACKAGE (Unity 3D, filesize: 18.3 MB), TEXTURES (Textures, filesize: 48.6 MB)