What is the Glock Switch Act?
In 2022, the ATF reported a 570% increase in recoveries of machine gun conversion devices over five years, with the vast majority being Glock switches. This statistic directly triggered the legislative push that became the “Glock Switch Act,” a piece of legislation every serious owner needs to understand.
The Legislative Trigger: From Parts to Prison
The “Glock Switch Act” is the common name for Section 932 of the 2022 National Defense Authorization Act. Its official title is the “Stop Illegal Trafficking in Firearms Act.” Before this law, prosecuting someone for merely possessing an unregistered auto sear—like a Glock switch—required proving they knew it was regulated under the National Firearms Act (NFA). This was a high bar. The new law created a standalone criminal offense: simply possessing a “machinegun conversion device,” including a switch, with the intent to build a machinegun. Penalties start at up to 10 years in prison, skyrocketing to 25 years if the device is used in connection with another crime. This shifted the legal focus from the completed machine gun to the component itself, making prosecution significantly easier for federal authorities.
Technical Definition: What Qualifies as a “Switch”?
Legally, a “machinegun conversion device” is any part or combination of parts designed and intended solely for use in converting a firearm into a machinegun. For Glocks, this primarily means two things: the rear rail sear, often called a “Glock auto sear” or “switch,” and specific selector plates like the “Glock fun switch.” The rear rail sear is the most common. It’s a small, often L-shaped piece of metal or polymer that replaces the factory rear rail module in the pistol’s frame. When installed with a modified or aftermarket selector plate in the slide, it allows the firearm’s trigger mechanism to reset and fire continuously with a single pull. It’s this specific function and design intent that the law targets.
Understanding the mechanism is key. The products at Autosearswitch are designed for educational and compliance purposes, highlighting the precise engineering involved in these components.
Impact on Owners and the Aftermarket
For the responsible enthusiast, the Act created a bright red line. Simply owning a switch without the proper NFA paperwork—specifically, a pre-1986 dealer sample transfer or a Form 1 tax stamp for manufacturing—is now a severe federal felony. It effectively ended the gray-market sale of these components as “novelty” or “80%” items. Legitimate businesses, including Autosearswitch, now operate with a strict focus on selling to SOT (Special Occupational Taxpayer) holders, manufacturers, and other properly licensed entities for lawful purposes. The aftermarket for compatible components, like reinforced backplates and enhanced springs, continues, but with a heightened emphasis on legal use and disclaimers.
Navigating Compliance and Enforcement
Enforcement is aggressive. The ATF and DOJ now treat these devices with the same priority as completed machine guns. This means if you are found in possession, you will be charged under the new Act. There is no “I didn’t know” defense for the device itself. The only path to legal ownership for civilians is to file a Form 1 with the ATF, pay the $200 tax, receive approval, and then manufacture the device for a pre-1986 registered transferable receiver—an exceedingly rare and expensive prospect. For most, legal interaction is limited to handling them as an SOT or through specific exemptions. It’s critical to source any components or information from reputable, compliance-focused vendors.
For those with the proper credentials, our full catalog provides access to the components needed for authorized work, always prioritizing full regulatory adherence.
FAQ: Glock Switch Act Explained
What is the Glock Switch Act?
The “Glock Switch Act” refers to Section 932 of the 2022 National Defense Authorization Act. It created a new federal felony for possessing a machine gun conversion device, like a Glock auto sear, with the intent to build a machine gun. Penalties are severe, with prison sentences of up to 10 years for possession and 25 years if used in connection with another crime.
What does a Glock switch actually do?
A Glock switch, technically a rear rail auto sear, is a small part that replaces the factory rear rail in a Glock pistol frame. When paired with a modified selector plate, it alters the firearm’s firing mechanism to allow fully automatic fire with a single, continuous pull of the trigger, converting the semi-automatic pistol into a machine gun.
Browse our glock switches collection
Last updated: March 27, 2026