The Undetectable Firearms Act of 1988 was signed into law by President Ronald Reagan on November 10, 1988, and became effective on December 9, 1988 ¹. The original Act had a ten-year sunset clause, and would have expired on November 10, 1998. Congress subsequently renewed it in 1998 for five years, in 2003 for ten years, and in 2013 for another ten years ¹². Therefore, the Undetectable Firearms Act was not set to expire on December 9, 2013.

More information: The Undetectable Firearms Act of 1988 is a United States federal law that makes it illegal to manufacture, import, sell, ship, deliver, possess, transfer, or receive any firearm that is not as detectable by walk-through metal detection as a security exemplar containing 3.7 oz (105 g) of steel, or any firearm with major components that do not generate an accurate image before standard airport imaging technology 1. The Act was signed into law by President Ronald Reagan on November 10, 1988, and became effective on December 9, 1988 1. The general effect of this legislation is a ban on the manufacture, possession, and transfer of firearms with less than 3.7 oz (105 g) of metal content 1. The bill also requires handguns to be in the traditional shape of a handgun 1. The Act excepts from its prohibitions the federal government and its agencies and may offer a safe harbor for licensed manufacturers testing to determine if their firearms meet the Act’s criteria ¹.

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