Originally Posted by
Bruno
IIRC, glock had a composite frame, not barrel.
Secret service doesn't really have much use for such a gun, since they are expected to be armed. Neither does an UC agent, since carrying a true polymer gun would be a huge red flag that would certainly blow their cover status. The crowd they hang out with would not typically use metal detectors, but pat downs. So the added value of the non detectable frame would be very slim compare to the big questions it would raise when found during a pat downs.
Besides, what I understood it that currently they can print parts of the frame. The barrel and chamber still need to be steel because no polymer could stand that pressure repeatedly and reliable. I suppose you could easily make single shot guns that way, but you can already do that without expensive 3D printer.
It will be interesting to see what the future will bring though, as 3D printers become more commonplace.