The FRT Question No One Can Answer

The FRT-15 dropped in late 2020 and immediately became the most controversial AR-15 accessory since the bump stock. Within months the ATF called it a machine gun. Rare Breed Triggers called back with a lawsuit. What followed was a five-year legal battle that went from cease-and-desist letters to the Supreme Court — and ended with the federal government handing seized triggers back to their owners.

But here's the part that doesn't make the headlines: the federal fight is over, and 15 states didn't care. They wrote their own laws. And those laws are still on the books.

We pulled data from 30+ expert videos in our database, cross-referenced court filings, the ATF's own open letters, the Cargill opinion, and state statutes to map the complete picture. The federal question is settled. The state question is not.

What an FRT Actually Does

Before the legal arguments, you need to understand what's happening mechanically. Because the entire federal case hinged on one question: does this thing fire once per trigger pull, or not?

A standard semi-auto works like this: you pull the trigger, the gun fires, you release the trigger to let it reset, then you pull again. Every shot requires two distinct actions from your finger — a pull and a release.

An FRT changes one step. You pull the trigger, the gun fires, and the bolt carrier group's rearward cycling physically forces the trigger forward past the reset point. Your finger is still there, still pressing — and the trigger snaps back against it, firing again. The gun is doing the reset for you. Your finger still does the pulling.

"It uses an assisted reset principle where the bolt's forward movement pushes the trigger forward, allowing for a rapid follow-up shot. Legally, it remains semi-automatic because it requires one trigger pull per shot." — Garand Thumb Watch at 4:35 →

Here's the critical distinction that every court case revolved around: if you grip the trigger too hard and prevent it from resetting, the gun malfunctions. It doesn't keep firing. A true machine gun doesn't care how you hold the trigger — pull once, bullets come out until you let go or run dry. An FRT requires a separate mechanical function per shot. It just happens fast.

The confusion is understandable. At the range, an FRT sounds like full-auto. The rate of fire can hit 400-600 rounds per minute. But the mechanism is fundamentally different from a full-auto sear, a binary trigger, or a bump stock.

A binary fires on pull AND on release — two shots per cycle. A bump stock bounces the entire receiver against a stationary finger. Full-auto uses a sear to re-engage automatically. An FRT does exactly one thing differently from semi-auto: it pushes the trigger back for you. Watch at 0:32 →

What's on the Market

Six manufacturers dominate the FRT space, and each has different platform compatibility, reliability, and legal history.

Rare Breed FRT-15

The original. AR-15 only. This is the trigger that started the legal war with the ATF. The FRT-15 is a drop-in replacement for a standard AR-15 fire control group. It's a two-position design — Safe and FRT. No semi-auto mode. You're either on safe or you're running the forced reset.

Rare Breed FRT-15L3

The evolution. Same Rare Breed, same platform, but now three positions: Safe, Semi, and FRT. This matters more than it sounds — having a semi-auto mode means you can use the trigger for normal shooting and only switch to FRT when you want it. The L3 addressed the biggest complaint about the original: that it was all or nothing.

Jerry Miculek — the fastest revolver shooter alive — ran the original FRT-15 head-to-head against his match trigger using Bill Drills. His takeaway was practical: for optimal performance, run an H2 buffer and a full-auto-profile bolt carrier. Watch at 2:56 →

ARC Fire (AS Designs)

The most versatile option. The ARC Fire works in the AR-15, Sig Spear LT, MP5/SP5, and HK MR556. That MP5 compatibility alone opened up a market segment nobody else was serving. Mike from Osprey Agency noted the lack of trigger slap compared to other FRTs and praised the clean, consistent pull. Watch at 4:14 →

Delta Team Tactical FRT-15L3

Works in AR-15s and some 9mm PCCs. One reviewer confirmed it runs in the Q Boom Box in .308 — one of the few FRTs to function in a .308 platform at all.

Warhammer Armaments "Super Safety"

MP5/MP5K specific. Doesn't require buffer tube modifications, which matters because the MP5 platform doesn't have a standard buffer system. Purpose-built for the roller-delayed platform.

Wide Open Triggers (WOT)

One of the first alternatives to the Rare Breed. AR-15 only. The WOT was part of the early wave of FRT designs that appeared after the FRT-15 proved the concept was viable.

What You Need to Know Before Installing

This is the part that trips people up. An FRT is not a drop-it-in-and-go accessory.

• Full-auto bolt carrier group: Required in almost every case. A standard semi-auto BCG won't cycle hard enough to force the reset consistently
• Buffer weight: H2 minimum, H3 recommended. A standard carbine buffer causes light primer strikes because the bolt doesn't have enough mass to seat fully
• Gas system: Direct impingement only. Most piston-driven guns — the PSA Jackal, Sig Rattler, PWS rifles — are incompatible. The piston's cycling characteristics don't match the FRT's reset timing
• Suppressors: More back pressure means faster bolt cycling, which means you need a heavier buffer (H4/H5) or a flow-through suppressor design to avoid outrunning the trigger
• AR-10: Generally incompatible. The bolt carrier sits at a different height relative to the trigger group, and most FRTs are designed around AR-15 geometry
• 300 BLK subsonic: May not cycle reliably. Subsonic loads don't generate enough gas to force the reset consistently

"While H and H1 buffers still result in light primer strikes, the H2 buffer finally allows the rifle to run reliably in forced reset mode unsuppressed." — Juicey Media Watch at 1:15 →

Every rifle is gassed differently. The Juicey Media team found the VLTOR A5 buffer system with an A5H3 buffer gave the most controllable suppressed fire — but the point is there's no universal setting. You have to find the sweet spot for your specific setup.

The ATF Timeline

This is the spine of the entire FRT story. Five years, from cease-and-desist to settlement.

2015 — Thomas Allen Graves files a patent for "Flex Fire Technology," the mechanical design that would become the forced reset trigger. The patent describes a trigger mechanism that uses bolt carrier energy to return the trigger to a forward position.

Late 2020 — Rare Breed Triggers brings the FRT-15 to market. It sells fast. The gun community immediately recognizes what it does and what it means — a legal way to get near-automatic rates of fire from a semi-auto platform.

July 2021 — The ATF sends its first cease-and-desist letter to Rare Breed, classifying the FRT-15 as a machine gun under the National Firearms Act. Rare Breed doesn't comply. Instead, they sue the ATF. The case is initially dismissed.

January-February 2022 — A leaked ATF Technical Bulletin (22-01) directs field offices nationwide to seize FRTs from distributors, retailers, and manufacturers. Agents show up at FFLs with seizure orders. Stock vanishes overnight.

"It instructs field offices to take possession of FRTs and documents from manufacturers and retailers, using 'consent to forfeiture' or seizure if they refuse." — Brandon Herrera, analyzing the leaked ATF letter Watch at 6:28 →

March 22, 2022 — The ATF publishes an Open Letter to all Federal Firearms Licensees officially reclassifying forced reset triggers as machine guns. The letter states that any FRT that allows the bolt carrier to force the trigger into a reset position meets the NFA definition of a machine gun. Possession becomes a federal felony overnight — at least on paper.

January 6, 2023 — The Fifth Circuit Court of Appeals, sitting en banc, rules in Cargill v. United States that bump stocks are not machine guns. The reasoning: a bump stock does not cause the weapon to fire more than one shot "by a single function of the trigger." This is a bump stock case, not an FRT case. But the logic applies directly.

June 14, 2024 — The Supreme Court decides Garland v. Cargill. The ATF exceeded its statutory authority by classifying bump stocks as machine guns. Justice Thomas, writing for the majority, defines "single function of the trigger" as the mechanical act of the trigger itself — not what the shooter's finger does. This definition is devastating for the ATF's FRT classification.

July 23, 2024 — Judge Reed O'Connor, applying the Cargill framework, vacates the ATF's FRT classification in NAGR v. Garland. The ruling explicitly states that if a bump stock — which allows rapid fire through recoil-driven cycling — isn't a machine gun, then a trigger that requires a separate mechanical function per shot certainly isn't.

May 16, 2025 — The Department of Justice settles with Rare Breed Triggers, the National Association for Gun Rights, and Lawrence De Monaco. All appeals dismissed with prejudice. The ATF is ordered to return all seized FRTs to their owners by September 30, 2025. As part of the settlement, Rare Breed agrees not to develop pistol-platform FRTs and to use its patents to prevent unsafe derivative designs.

The federal fight is over. The ATF spent four years and significant resources trying to ban a trigger that fires once per pull. The Supreme Court's Cargill ruling made the classification untenable — if a bump stock isn't a machine gun, a trigger that mechanically resets between each shot certainly isn't.

Why Cargill Changed Everything

Garland v. Cargill never mentioned forced reset triggers. It didn't need to.

The entire case turned on six words: "single function of the trigger." The ATF argued that a bump stock allowed a shooter to fire multiple rounds with a single pull of the trigger — one action, many bullets, that's a machine gun. The Supreme Court disagreed.

Justice Thomas drew a line that the ATF didn't see coming. "Function of the trigger" means the mechanical movement of the trigger itself — not the shooter's finger, not the rate of fire, not the end result. A bump stock allows the trigger to move forward and rearward once per shot. One trigger function, one bullet. Do it fast and it sounds like a machine gun. Mechanically, it isn't one.

Now apply that framework to an FRT. The trigger physically resets — moves forward past the disconnector — and is pulled again for every single round. If a bump stock, where the gun bounces against a stationary finger, isn't a machine gun under this definition, an FRT is even further from the line. The trigger literally does two things (reset and pull) per shot. A machine gun trigger does neither — it stays back while the sear does all the work.

Judge O'Connor applied exactly this reasoning three weeks after Cargill. The DOJ settled rather than take the appeal to a circuit that would apply Cargill and lose again. That settlement — dismissal with prejudice — means the federal government can't reclassify FRTs under the current statutory framework. Congress would have to pass a new law.

The State Problem: 15 Bans and Counting

Here's where most people stop reading and start buying. Don't.

Federal legality does not override state law when the state law is independently enacted. The ATF's classification is gone. State legislatures that banned "rapid-fire trigger activators" or "rate-of-fire enhancement devices" wrote their own definitions. Those definitions don't reference the ATF classification. They don't depend on it. And they're still enforceable.

Confirmed Bans (as of early 2026)

California — Banned under Penal Code 32900, which prohibits "multiburst trigger activators." The definition covers any device that increases the rate of fire beyond standard semi-automatic. See CA gun laws →

Florida — SB 7026 (2018), passed after the Parkland shooting. Bans "bump-fire stocks" and any device that "when installed in or attached to a firearm, allows the firearm to discharge two or more shots in a burst by activating the device." Third-degree felony. See FL gun laws →

New York — SAFE Act (2013, expanded 2019). Bans any device that causes a semi-automatic to fire more rapidly than standard operation. See NY gun laws →

Maryland — SB 707 (2018). Specifically bans "rapid-fire trigger activators" by name. See MD gun laws →

New Jersey — Bans "trigger cranks" and "bump stocks" with language broad enough to cover FRTs. See NJ gun laws →

Massachusetts — AG enforcement letter (2017-2018) and statutory framework banning rate-of-fire enhancement devices. See MA gun laws →

Also banned in: Connecticut, Delaware, Hawaii, Nevada, Rhode Island, Vermont, Washington, and the District of Columbia.

Ambiguous or Unclear

Minnesota — Statutory language is broad enough to potentially cover FRTs, but no enforcement action or AG opinion has been issued. Don't assume it's legal. Don't assume it isn't.

Connecticut, Michigan, Puerto Rico — Various levels of ambiguity in statutory definitions.

Why State Bans Survive

The key insight: state laws use broader language than federal law. The ATF's machine gun definition requires a "single function of the trigger" to fire more than one shot. State laws don't use that language. They ban devices that "increase the rate of fire," "simulate automatic fire," or "allow rapid successive shots." An FRT does all of those things — even though it fires once per pull.

This is the legal gap that catches people. You read that the ATF lost. You read that FRTs are legal. You buy one and drive to Florida. And now you're committing a third-degree felony.

The Buyer's Risk Matrix

Three scenarios. Know which one you're in.

You live in a state with no ban. Federally legal. State legal. Buy from a reputable manufacturer. Keep your receipt and any documentation. If you previously surrendered an FRT during the ATF's seizure campaign, you were entitled to have it returned by September 30, 2025.

You live in a state with a ban. Do not buy, possess, or transport an FRT into that state. Federal legality is irrelevant. The ATF settlement changed nothing about state law. Florida is a third-degree felony. California is a misdemeanor or felony depending on circumstances. These aren't theoretical risks — state law enforcement has its own authority independent of the ATF.

You travel between states. This is the one people don't think about. The FRT in your range bag is legal in Texas and a felony in Florida. If you drive from Virginia to New York, you're crossing from legal to illegal. Know every state you'll pass through. The interstate transport protections under FOPA (Firearm Owners Protection Act) cover firearms in transit, but trigger devices in banned states are a gray area that no one has tested in court.

Practical notes for legal-state buyers:

• Some FFLs won't transfer or sell FRTs even in legal states due to liability concerns. Don't argue with them — find one who does. Find an FFL near you →
• Keep your purchase documentation. If the legal landscape changes, proof of legal acquisition matters
• The settlement included a clause where Rare Breed agreed not to develop pistol-platform FRTs. If you see one marketed, it's not from Rare Breed

Reliability and Setup

If you've decided you're legal and you're buying one, this is what you need to know to make it run.

The number one complaint from new FRT owners is "it doesn't work." In almost every case, the problem is the buffer, the bolt carrier, or both. An FRT requires specific conditions to cycle the reset mechanism — it needs enough bolt carrier mass and velocity to push the trigger forward against spring tension.

The minimum setup:

• Full-auto bolt carrier group (the carrier has a larger rear shelf that engages differently)
• H2 buffer minimum, H3 recommended (heavier buffer prevents bolt bounce)
• Direct impingement gas system (piston guns don't generate the right cycling characteristics)
• Clean, lubricated trigger group (the forced reset mechanism has tighter tolerances than a standard FCG)

If you're running a suppressor: The added back pressure speeds up bolt cycling. You'll likely need an H4 or H5 buffer to keep the timing right, or a flow-through suppressor design that doesn't trap as much gas. Running a standard H2 buffer with a suppressor on an FRT will feel uncontrolled — the bolt outruns the trigger reset.

Platforms that don't work: AR-10 (bolt carrier height mismatch with AR-15 trigger geometry), most piston-driven ARs (PSA Jackal, Sig Rattler, PWS), and 300 Blackout with subsonic ammo (not enough gas to cycle the reset).

The ARC Fire generally gets the best marks for smoothness across platforms. The Rare Breed FRT-15 has the longest track record. The WOT and Delta Team Tactical options are functional but less refined. Warhammer's MP5 solution is purpose-built and works well in its narrow lane.

The Bottom Line

The FRT started as a clever mechanical design and became a constitutional test case. Five years, multiple courts, one Supreme Court decision, and a DOJ settlement later — the federal question is settled. A forced reset trigger fires one round per trigger pull. It is not a machine gun under federal law.

But 15 states didn't wait for the federal government to figure that out. They wrote their own laws with their own definitions. Those laws use words like "rate of fire" and "simulates automatic fire" instead of "single function of the trigger." And under those definitions, an FRT is banned regardless of what the Supreme Court said about bump stocks.

The mechanical question is settled: an FRT fires one round per trigger pull. The legal question depends entirely on your zip code.