What exactly does the ATF's ghost gun rule apply to — and what's still unregistered?

Question

The rule targets *unserialized firearms manufactured by non-licensees* — that's the controlling language from the final 2022 ATF guidance. Let me break what that actually means:

1. **Applies to:** Receiver blanks, 80% frames, and kits sold on or after the rule's effective date (November 2022) that *can be readily converted* into a functional firearm.
2. **Applies to:** Anyone manufacturing those items for sale or distribution.
3. **Does NOT apply to:** Firearms you manufactured before November 2022. Pre-rule builds are grandfathered — you don't have to serialize or register them retroactively.
4. **Does NOT apply to:** Frames and receivers that were already FFL-regulated (like stripped AR uppers/lowers sold as "firearms" pre-rule).
5. **Does NOT apply to:** Unfinished blanks that cannot reasonably be converted without substantial machining.

**The practical question everyone asks:** If you bought an 80% lower in 2021 and finished it in 2024, do you have to register it? No — the item was manufactured before the rule took effect. *However,* if you *sell* that gun, the buyer and transaction rules depend on your state and whether you're operating as a licensee.

The ATF's enforcement authority hinges on the timing of manufacture, not possession or use. That's the distinction that gets lost.

*This is not legal advice. Your specific build date and state law matter. Consult a local attorney before relying on any timeline.*

Dale Schuster · Accepted Answer

Constitutional's right that there's daylight between what the statute says and what a court might say later. Fair enough. But I'm gonna stay in my lane here—which is what happens the second someone walks in with a gun that might need a 4473.

Here's the thing nobody likes to talk about: *I don't know the manufacture date*. Not really. The buyer doesn't either, half the time. "I built it in 2021" is what people tell me. I have no serial number to cross-reference, no manufacturer stamp, no bound book entry from before November 2022 that proves it. So from a Form 4473 standpoint, I'm taking the customer's word for it—and that liability lands on me if there's a discrepancy.

The constitutional question is for the courts. The practical question is: if a customer wants to transfer a pre-rule build through an FFL, I need documentation. A receipt from the 80% kit purchase, timestamped before November 2022, is your best bet. Without it, we're both in a gray zone, and I'm not signing a 4473 on the back of "trust me, I made it in '21."

OP's timeline is correct. Constitutional's right that courts might disagree later. But the dealer still has to fill out the form *today*, and my bound book doesn't have a Bruen footnote in it.

David Walsh · Answer

Both of you are working different doctrinal layers, and that's useful. Let me clarify the controlling distinction that resolves the practical tension.

The rule itself turns on *manufacture date of the receiver or frame*—not purchase date of the kit, not completion date, not transfer date. 27 CFR 478.11 defines "manufacture" as fabrication or assembly. For an 80% lower, that means the moment you—the non-licensee—machine it into a functional receiver. If that happened before November 8, 2022, the resulting firearm is not subject to the rule's serialization or dealer-transfer requirements.

Counter_rat's concern is real but solvable. Documentation helps, yes. A dated receipt for the kit purchase *before* November 2022 creates a rebuttable presumption that manufacture occurred pre-rule. But you don't need it signed in blood. ATF guidance on this is thin, but the burden sits with ATF to prove manufacture *occurred post-rule*—not with you to prove it didn't. That said, when counter_rat asks for documentation before running a 4473, he's protecting both of you. A contemporaneous receipt (invoice, email, credit card statement) showing purchase in 2021 is genuinely helpful.

Constitutional's Bruen point is legitimate doctrine, but it doesn't change the statutory language *today*. Bruen might gut the rule later. Until then, ATF enforces what's written. Your lawyer should know both tracks: what the rule says now, and what Bruen-level vulnerability exists.

If you built pre-November 2022: keep whatever proof you have. If you're transferring: bring it to the dealer.

Not legal advice. Jurisdiction and your specific facts matter. Consult local counsel.

James Whitfield · Answer

OP's timeline analysis is administratively accurate, but it sidesteps the constitutional question that actually matters here.

The ATF's November 2022 rule rests on the Commerce Clause and the Firearms Act's definition of "manufacturer." That's fine *as far as it goes*. But Bruen (2022) requires us to ask whether a regulation's *substance*—not its enforcement mechanics—aligns with the text, history, and tradition of the Second Amendment.

A pre-1791 unfinished blank wasn't regulated. A 20th-century 80% lower wasn't regulated until this rule. The rule now treats a *component* as a firearm based on its capacity to be finished, without requiring actual manufacture into a functional arm. That's a meaningful doctrinal shift, and it applies to *sale and distribution*, which implicates interstate commerce and traditional dealer conduct.

Heller and McDonald are clear: the right exists independent of regulatory permission. Bruen adds texture: regulations must fit historical analogs. The ATF's "readily convertible" standard is regulatory language doing the work of legislative definition—something the Court flagged as problematic in Bruen.

I'm not saying the rule is certainly unconstitutional. I'm saying OP's post describes the *statutory language* without addressing whether that language survives Bruen scrutiny. Those are different questions. Until we see circuit-level review, we're in uncertainty.

Your state attorney is the right move, but they should also flag this as an unsettled constitutional question—not just an administrative one.