Caught with a Switch: Federal Penalties and 30-Year Minimum

Getting caught with a Glock switch is a federal felony that carries up to 10 years in prison and a fine of up to $250,000, even if the device is never attached to a gun. If the switch turns up during a violent crime or drug trafficking offense, federal law adds a mandatory 30 years on top of any other sentence, served consecutively. A second such offense carries mandatory life. Roughly half the states also have their own laws banning these devices, and those charges can be brought in addition to the federal case.

Why the Switch Itself Is a Machinegun

Under 26 U.S.C. § 5845(b), the federal definition of “machinegun” is not limited to complete weapons. It includes any part designed and intended for converting a weapon into a machinegun, and any combination of parts from which a machinegun can be assembled if those parts are in someone’s possession or control.¹ A Glock switch fits squarely inside that language. Whether it is installed on a pistol, sitting in a drawer, or still sealed in a shipping envelope from overseas, the device on its own is legally a machinegun.²

Civilian possession of machineguns has been effectively banned since 1986. Under 18 U.S.C. § 922(o), transferring or possessing a machinegun is unlawful unless the specific weapon was lawfully possessed before May 19, 1986, or is held by a government agency.³ Switches are modern manufactures produced long after that cutoff. There is no registration path, no tax stamp, no permit. Every switch in civilian hands is contraband.

Penalty for Simple Possession

Two federal statutes drive the baseline sentence. A violation of the machinegun ban in § 922(o) carries up to 10 years in federal prison under 18 U.S.C. § 924.⁴ The National Firearms Act imposes its own penalty of up to 10 years and a fine of up to $10,000 for violating its registration and tax provisions.⁵ Under the general federal fine statute, any felony conviction can carry a fine of up to $250,000.⁶

That 10-year ceiling applies to the cleanest version of the case: one device, no other criminal conduct, no distribution, no violence. The sentence a judge actually imposes turns on the federal sentencing guidelines, the defendant’s criminal history, how many devices were recovered, and whether prosecutors charge one or both statutes. Federal sentences have no parole, so whatever the judge imposes is served nearly in full.

The 30-Year Mandatory Minimum

The penalty structure changes completely when a switch appears in the middle of another crime. Under 18 U.S.C. § 924(c), anyone who possesses a machinegun in connection with a crime of violence or a drug trafficking offense faces a mandatory minimum of 30 years in federal prison, and that sentence must run consecutively to the sentence for the underlying offense. A prior conviction under § 924(c) makes any second offense involving a machinegun a mandatory life sentence.⁴

The practical effect is severe. Someone arrested for a drug sale while carrying a Glock with a switch installed is looking at whatever the drug case produces plus 30 additional years that cannot be reduced, suspended, or run concurrently. It is one of the harshest mandatory minimums in the entire federal criminal code, and it attaches to a part that fits in a pocket.

You Do Not Need a Gun for the Charge

A common assumption is that the switch has to be attached to a pistol, or at least sitting next to one, before prosecutors can act. That is not how the statute works. Because the definition of “machinegun” independently covers any part designed for the conversion, simple possession of the device by itself is the crime.¹ The ATF has stated the point directly: “A conversion device just on its own is considered an illegal machine gun under federal law and cannot be possessed, even without a pistol or rifle.”²

The same reasoning reaches unassembled kits. A box of loose components that together are designed and intended to convert a weapon into a machinegun meets the statutory definition on its own.

Ordering One Online

Most switches recovered in the United States were shipped from overseas, particularly from China, marketed as “Glock accessories” or “selector switch parts.” Placing that order triggers several federal violations at once: importing a machinegun part violates the NFA, and receiving it violates § 922(o). In a single coordinated operation, federal authorities seized more than 700 conversion devices, 87 illegal suppressors, and over 350 website domains used to facilitate imports of switches and silencers from China.⁷ Recovery is not rare, either. The ATF has publicly reported more than 31,000 conversion devices recovered in a recent five-year span.²

Customs and Border Protection flags these packages. Once intercepted, the case typically gets referred to the ATF, and the intended recipient can face charges for attempted possession or importation. Knowingly importing a firearm or firearm component in violation of federal law carries up to five years, and the machinegun charge itself carries up to 10 more.⁴

State Charges on Top of the Federal Case

About half of U.S. states have their own laws banning switches, either by name or under broader prohibitions on machineguns and illegal firearm modifications.⁸ State prison terms for these offenses typically run somewhere between 3 and 15 years, depending on the jurisdiction and circumstances.

Facing both a state and a federal prosecution for the same device is legal. Under the dual sovereignty doctrine, the federal government and a state government are separate sovereigns with independent authority to enforce their own criminal laws, and a case in one system does not bar the other.⁹ A single switch discovered at a traffic stop can produce a federal indictment and a state felony case, with sentences that may run consecutively.

What Makes Sentencing Worse

Several factors push a switch case from serious to catastrophic.

A prior felony conviction. Anyone previously convicted of a crime punishable by more than one year in prison is barred from possessing any firearm or ammunition under 18 U.S.C. § 922(g). Adding a machinegun charge on top of a felon-in-possession charge sharply raises the guideline range.³
Multiple devices or evidence of distribution. Manufacturing or selling switches transforms a case into a supply-chain target for the ATF, as it did in a Fort Worth prosecution involving a defendant who allegedly produced thousands of 3D-printed conversion devices.¹⁰
A connection to violent crime or drugs. This is what triggers the 30-year mandatory minimum under § 924(c).⁴
Other contraband recovered at the same time. Controlled substances, unregistered suppressors, or stolen firearms found alongside the switch will generate separate charges that stack.

Consequences That Outlast the Sentence

A felony conviction for possessing a switch permanently strips the right to own or possess any firearm or ammunition under federal law.¹¹ The government can also seize and forfeit firearms, ammunition, and related property connected to the offense.

For non-citizens, the exposure is greater still. Under 8 U.S.C. § 1227(a)(2)(C), any non-citizen convicted of possessing a firearm or firearm part in violation of any law is deportable. That covers lawful permanent residents, visa holders, and everyone else who is not a U.S. citizen.¹² Because a switch is a machinegun part, a conviction can trigger removal proceedings against someone who has lived in the country for decades.

The record itself is another lasting cost. A federal felony conviction appears on background checks for employment, housing, professional licensing, and financial applications, and federal convictions cannot be expunged in most circumstances. The consequences follow long after any prison term ends.

1
Office of the Law Revision Counsel. 26 USC 5845 – Definitions
2
Bureau of Alcohol, Tobacco, Firearms and Explosives. U.S. Attorney and ATF Release New Public Service Announcement Warning Against Possession of Machine Gun Conversion Devices
3
Office of the Law Revision Counsel. 18 USC 922 – Unlawful Acts
4
Office of the Law Revision Counsel. 18 USC 924 – Penalties
5
Office of the Law Revision Counsel. 26 USC 5871 – Penalties
6
Office of the Law Revision Counsel. 18 USC 3571 – Sentence of Fine
7
Homeland Security Today. Federal Authorities Seize Over 350 Website Domains Used to Import Illegal Switches and Silencers From China
8
Everytown Research & Policy. Auto Sears/Glock Switches Prohibited
9
Legal Information Institute. Separate Sovereigns Doctrine
10
Bureau of Alcohol, Tobacco, Firearms and Explosives. Fort Worth Manufacturer Charged in Glock Switch Case
11
Bureau of Alcohol, Tobacco, Firearms and Explosives. Identify Prohibited Persons
12
Office of the Law Revision Counsel. 8 USC 1227 – Deportable Aliens