Primers and projectiles are going to contain dense material if it's going to be an effective firearm. Without an effective projectile you would be better off with a knife.
Even a plastic weapon is going to require dense material around the chamber and barrel. Plastic can show in an x-ray scan, chambers and barrels are pretty distinctive.
IMO, most of the hullabaloo about this plastic gun is all about controlling the masses and scaring voters into giving up more rights.
Gene363 wrote: