Airport security uses low level x-rays and metal detection. But will it detect a plastic gun? Like one that can be printed using the 3D printing technology?
Such a gun was predicted many years ago in Frederick Forsyth’s classic The Day of the Jackal. The original 1973 movie version anyway. The Jackal not only had that cool rifle disguised as crutches, but also a double-barreled handgun that was plastic and fired plastic bullets, if I remember correctly. Been a while since I saw the movie.