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🔧 What is a “Switch” (Glock Switch)? • Real name: It’s officially known as a Glock auto sear or Glock conversion device. • Function: When installed, it allows the gun to fire multiple rounds with a single trigger pull (i.e., fully automatic fire). • Size: It’s very small—often the size of a coin—and attaches to the back of the slide. • Legal status: • Illegal under federal law in the U.S. unless registered under the National Firearms Act (NFA), which most civilians cannot legally do. • Classified as a machine gun by the ATF even if it’s just the switch itself and not installed. ⸻ ⚠️ Legal & Safety Warning • Possession of a switch, even if not installed on a firearm, can lead to serious federal charges, including up to 10 years in prison per device. • They are dangerous, often causing jams or misfires if not professionally installed (and they usually aren’t).