MG-34 Low-poly 3D model is available on CGTrader for $35. Original author: tirta. Specs: 20307 verts.
BLEND (Blender, filesize: 158 MB), FBX (Autodesk FBX, filesize: 238 MB), TEXTURES (Textures, filesize: 79 MB), JPG (JPG, filesize: 79 MB), PNG (PNG, filesize: 79 MB)