The gun is a plastic mechanism nothing more the dangerous bit as with all guns is the bullet and whilst it might be was to get some bits of plastic through security I very much doubt they would have got a bullet through the scanners. No bullet a water pistol can do more harm that that gun. Security needs to always stay 1 step ahead but you cannot stop development. One time I was traveling abroad and you get all the traditional questions at security asking if your carrying a weapon or sharp objects to which I replied no. What I forgot was on my keyring I have a pocket knife but the blade folds away into a hollow that looks exactly like a regular key. Was a legitimate mistake on my part but security needs to prepare for all potential threats.
Gunmen in Egypt kill guard outside Niger embassy (Reuters)