Q: What are the specifics of the Undetectable Firearms Act?
The meat of the law makes it a federal offense to "manufacture, import, sell, ship, deliver, possess, transfer, or receive" a firearm capable of defeating airport metal detection. It requires that any firearm, minus the
stock,
grips, and
magazine, have an X-ray detection signature no less than that of a calibration sample containing 3.7 ounces of stainless steel.
The law also prohibits you from making or selling a firearm that "does not generate an [X-ray] image that accurately depicts the shape of the component." In other words, it's a federal crime to make and sell a gun that looks like something else to an airport X-ray scanner.