At the National Association for Gun Rights (NAGR), we believe in one unshakable truth — the Second Amendment is not up for debate. That’s why we make it our mission to fight for gun owners across the country on not just their rights, but the legal minefields Washington, D.C. bureaucrats and anti-gun zealots keep setting up to trap them.
One of the latest talking points from the anti-gun crowd? Glock switches and auto sears.
If you’ve heard the media fearmongering about “illegal machine gun mods” or seen politicians feigning outrage over so-called “conversion devices,” you’re not alone. But gun owners deserve the facts — without the spin, without the hysteria.
Here’s what you need to know.
What Are Glock Switches and Auto Sears?
Let’s get something straight right out of the gate: A Glock switch (also called an auto sear for pistols) is a small mechanical device that, when installed, allows a semi-automatic Glock to fire in full-auto mode. Similarly, auto sears used in rifles like the AR-15 modify the fire-control group to simulate automatic fire.
These are mechanical parts — not magic death buttons. But because they turn a semi-automatic firearm into one capable of continuous fire with a single trigger pull, the federal government ALREADY classifies them as “machine guns” under the National Firearms Act (NFA) and Gun Control Act (GCA).
How Glock Switches Work
A Glock switch works by disrupting the internal timing of the slide and trigger mechanism. Installed at the rear of the slide, it overrides the disconnector, allowing the pistol to fire multiple rounds with a single pull – until the magazine is empty or the shooter releases the trigger.
While the switch itself is just a hunk of metal or plastic, its ability to alter the firearm’s function is what puts it on the ATF’s radar.
How Auto Sears Work in Rifles
Auto sears in rifles like the AR-15 operate by controlling the hammer’s release point. When engaged, the auto sear allows the bolt carrier to trip the hammer without the trigger resetting between shots — resulting in automatic fire.
The key distinction? Pre-1986 legally registered auto sears (commonly referred to as “transferable machine guns”) are still legal for civilians to own under the NFA, provided all registration and tax stamp requirements are met. Anything made or imported after 1986? As of the writing of this article, these are unfortunately off-limits to the average gun owner.
Legal Status: Read This Twice
Under federal law, any device — even a 3D-printed chunk of polymer — that enables full-auto fire qualifies as a machine gun.
That means:
- Possessing a Glock switch or an unregistered auto sear = Felony
- Penalties = Up to 10 years in prison and a $250,000 fine
There are narrow exceptions for Special Occupational Tax (SOT) holders, law enforcement agencies, and the military. But if you’re an average civilian? Even possessing one, not even installed, can get you slammed with federal charges.
Let us be clear: NAGR does not endorse breaking the law.
What we do oppose is the overreach that criminalizes law-abiding gun owners for mere possession of parts, while turning a blind eye to criminals who ignore every law already on the books. And of course, we are working around the clock to legalize machine guns by repealing the NFA of 1934, GCA of 1968, and Hughes Amendment of 1989.
Red Flags in State-Level Bills: “Rapid Fire Trigger Activators”
Here’s where things get even more dangerous — and deceptive.
While anti-gun Democrats in places like Illinois and California are pushing laws specifically banning Glock switches, many of these bills go far beyond aligning with federal law. They introduce vague, undefined terms like “rapid fire trigger activators” — legal landmines that could be twisted to ban entirely lawful firearm accessories.
Sound familiar?
That’s because these broad terms are already being used to target Forced Reset Triggers (FRTs), Binary Triggers, and potentially even competition-grade drop-in triggers.
And it’s not just blue states pushing this garbage.
Alabama and Indiana — deep red, supposedly pro-gun states — just passed a bill with nearly identical language. Under the guise of targeting Glock switches, politicians in Montgomery handed anti-gun prosecutors a legal bludgeon to go after anyone using “upgraded triggers” because of the uncertainty and grey areas of the law.
Make no mistake: This isn’t about stopping criminals. It’s about redefining what counts as a “machine gun” to criminalize gun owners.
And once you give that power to a politically motivated DA, don’t expect it to stop with FRTs.
This is why NAGR is fighting tooth and nail in every state where these laws are proposed. Because once the government starts defining gun parts with phrases like “increased rate of fire” and “easily converted,” it’s only a matter of time before your rifle — or your freedom — gets reclassified.
Why the Media Won’t Shut Up About These Devices
Glock switches and auto sears are the media’s latest boogeyman.
Local and national outlets love to run horror stories about criminals using “illegal machine guns” without ever clarifying that the vast majority of these devices are already banned and heavily prosecuted. What’s missing from the conversation? Any real distinction between lawful gun owners and gangland criminals.
The truth is, responsible gun owners aren’t the problem — and the media knows it. But scaring the public makes for good ratings and helps push anti-gun legislation that punishes the innocent and emboldens the lawless.
What NAGR Believes
The National Association for Gun Rights believes that every federal restriction (with the exception of violent felon bans) on the right to keep and bear arms is unconstitutional. Period.
That said, we live in a world where the federal government has weaponized paperwork, politics, and prosecution against gun owners, and we won’t let our members get blindsided.
Our job is to fight the unconstitutional laws and keep you informed so you don’t become the next victim of an overzealous ATF raid or a rogue DA with an axe to grind.
Frequently Asked Questions
Are Glock switches and auto sears illegal in every case?
Not for law enforcement, military, or FFL/SOT holders. Civilians may legally own pre-1986 auto sears registered under the NFA.
Why are these devices regulated?
Because of the NFA’s broad definition of a “machine gun” and the 1986 Hughes Amendment, which banned new civilian machine guns — an infringement we’re committed to fighting.
What if I see someone online selling one?
Stay far away–it is likely a Federal Honey Pot Sting. Even talking about these devices in the wrong forum could put you on the FBI/ATF’s radar.
How can I learn more about what’s legal and what’s not?
Start by joining the National Association for Gun Rights. We keep our members up-to-date with alerts, legal breakdowns, and action campaigns to fight back.
Make Your Voice Heard — Sign the Petition to Fight Back
If you’re sick and tired of watching politicians chip away at your Second Amendment rights, do something about it.
Sign the Make America Armed Again petition today and help us put every federal anti-gun lawmaker in America on notice. NAGR will deliver every single petition — at our expense — directly to the politicians pushing these unconstitutional bans.
This is your chance to stand up and be counted. No compromise. No surrender.
Sign the petition now and help us fight back with overwhelming grassroots pressure.
At the National Association for Gun Rights, we don’t apologize for defending your rights. We don’t compromise. And we sure as hell don’t back down.
Disclaimer: The information provided in this article is for informational and educational purposes only. Nothing herein should be construed as legal advice. Laws and regulations regarding firearms and firearm accessories vary by jurisdiction and are subject to change.
The National Association for Gun Rights (NAGR) does not provide legal advice. If you have legal questions or concerns regarding firearm ownership, modifications, or usage, you should consult with a qualified attorney who is familiar with the applicable laws in your area.
This article was written and has not been updated since Wednesday, April 16, 2025.
About the Author
Taylor Rhodes is the Director of Communications at the National Association for Gun Rights. A seasoned political strategist and unapologetic defender of the Second Amendment, Taylor has led high-impact campaigns at both the state and national levels. He lives in Hoover, Alabama with his wife, Madison, and enjoys bourbon, golf, and collecting firearms—especially his 12.5” Geissele Super Duty.
