Glock Switch Legality: State by State

You just bought a Glock 19 Gen 5 and you’re looking at a Switch. Before you even think about installation, you need to know this: in the United States, a Glock switch—a machine gun conversion device—is federally regulated under the National Firearms Act (NFA). That means it’s a Title II firearm, the same as a suppressor or short-barreled rifle. Possession without the proper tax stamp and registration is a felony, punishable by up to 10 years in prison and a $250,000 fine. Federal law is the baseline, but state law can be far more restrictive. This isn’t about opinions; it’s about the letter of the law as it stands today.

The Federal Baseline: NFA Rules Apply Everywhere

Under federal law, specifically 26 U.S.C. § 5845(b), a machine gun is defined as any weapon which shoots, is designed to shoot, or can be readily restored to shoot, automatically more than one shot without manual reloading, by a single function of the trigger. A Glock switch, like the common “Glock Auto Sear” or “Giggle Switch,” meets this definition precisely. To own one legally, you must submit a Form 4 to the ATF, pay a $200 tax, and pass an extensive background check. The device must be registered to you or your trust before you can take possession. This process takes months. Crucially, manufacturing one yourself by 3D printing or machining, even for personal use, requires filing a Form 1 and receiving approval before you start. Doing it afterward is illegal manufacture of a machine gun.

States with Full Prohibition: No NFA Items Allowed

Several states have laws that outright ban the possession of any machine gun, regardless of federal registration. If you live in one of these states, a tax stamp is meaningless. The most restrictive are California, New York, New Jersey, Illinois, and Washington D.C. For example, California’s Penal Code 32625 prohibits possession of any machine gun, with extremely narrow exceptions for certain licensed entities. In Illinois, the Firearm Owners Identification (FOID) Act and the state’s machine gun ban make possession illegal for civilians. Residents of these states cannot legally possess a Glock switch, period. Attempting to have one shipped to these addresses, even from a dealer like Glockswitchstore, is impossible for a compliant business.

States with Modified NFA Allowances

A larger group of states generally permits NFA items, including machine guns, provided they are federally registered. However, they often attach additional conditions. States like Michigan, Pennsylvania, and Virginia allow ownership but may have transport restrictions or require specific state-level permits. Some states, like Iowa and Minnesota, have removed their state-level bans in recent years, opening a path for legal ownership following the federal process. It is your responsibility as the owner to know your state’s specific statutes on transport, storage, and use. A legally registered switch in Texas does not grant you the right to bring it into New York, even temporarily.

The Grey Areas and Critical Considerations

Two significant legal pitfalls exist beyond simple possession. First is the “readily convertible” doctrine. The ATF has ruled that possessing certain parts, tools, and instructions with the intent to create a machine gun can constitute illegal possession even if the device isn’t assembled. Second is state-level “assault weapon” bans. Some states define a firearm equipped with a conversion device as a banned assault weapon, creating another layer of violation. Always consult with a firearms attorney licensed in your state before initiating a Form 4 transfer. Assuming it’s legal because you saw it online is a direct path to losing your rights and your freedom.

Where are Glock switches legal?

Glock switches are only legal in U.S. states that do not prohibit NFA items and only after the individual device has been registered with the ATF via a Form 4 transfer and a $200 tax stamp is paid. States like Texas, Florida, and Arizona permit ownership following this federal process. States like California and New York ban them entirely.

Where are Glock switches legal in the world?

Outside the U.S., civilian ownership of machine gun conversion devices is exceptionally rare. A handful of countries like the Czech Republic and Switzerland may allow highly restricted ownership under specific licenses, but it is not comparable to the U.S. NFA process. In the vast majority of nations, including Canada, the UK, and Australia, possession is completely illegal for civilians.

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Last updated: April 07, 2026