I'm not sure all the "appointments" could be made of gun metal, but they would be the pocket clip on the cap and the screw threads for the cap and other fittings around the nib, which would be made of some other metal I believe. I love writing with a fountain pen, but it is like an art project. Writing is such a compulsion, I need pens that write in rain and fire and over food grease and gravel. Usually this is a ballpoint like a Zebra or something else in that class, better than a bic but sold at the drugstore.