Sad, but not particularly newsworthy, nor is it an indictment against guns. A person intent on committing suicide will find a way to do it (lying on a train track is easier than buying a gun, and less susceptible to screwing it up).
Before you get the wrong idea, I'm not in any way condoning suicide. I think it's a horrible (and, ultimately, selfish) act. But my point is, the problem isn't gun-related at its root.
DD