I'm presenting you improvised/homemade Sten Gun. You can easily detach all parts and it contains material created all entirely in Blender (no imported textures). If you have any questions or suggestions, let me know.
OBJ (OBJ, filesize: 6.99 MB), BLEND (Blender, filesize: 7.68 MB), FBX (Autodesk FBX, filesize: 2.7 MB)