True. Particularly if it is a 3D printed AR1547 Glock assault rifle, with 3D printed armor-piercing hollow-point Black Talon bullets that can go around corners and blow concrete blocks to heck, not to mention people. And if there is a collapsible stock, you can stick the whole assault rifle and the 2000 round magazines full of bullets up your rear end, and the scanners won’t pick up any of it! Although you might have to walk a little funny.