[firebrand]

Where's the plastic gun from In the Line of Fire (I think that was the movie). The assassin makes it himself out of plastic to pass through the metal detectors.

[firebrand]

From Wikipedia:

He is also proficient at gunsmithing and builds a composite (i.e. non-metallic, in this case) zip gun with the bullets hidden in a key chain, so as not to set off any alarms at security gates.