Form 1 Suppressor After Oct. 9: File It, Mark It or Skip It?
Form 1 suppressor approval stopped being enforced by ATF on October 9, 2026, but many states still tie a homemade one to registration.
In This Article
Originally published: November 1, 2026
A Form 1 suppressor is a suppressor an unlicensed person makes after filing ATF Form 1, the Application to Make and Register NFA Firearm, and most shooters just call it a Form 1 build or a homemade suppressor. Since October 9, 2026, ATF says an unlicensed maker no longer needs that approval under federal policy, yet the federal statute was not repealed and your state’s law did not move an inch. Federal policy changed. State law did not.
Legal note. This is general information about federal and state firearm law, not legal advice, and the author is not an attorney. ATF’s position is an enforcement policy that ATF says could change. Suppressor ownership, making and hunting rules vary by state, and some states ban suppressors outright; check your state’s statute or a licensed attorney before you make or buy one. This page gives no build instructions.
So the question customers ask “should I still file the paperwork?” more than “can I build one?” The answer turns on three things: where you live, where you might move, and whether you want that suppressor on the federal registry for the rest of its life. There’s good arguments to go either way and ultimately it comes down to each individuals comfort zone.
Form 1 Suppressor Rules at a Glance
- Federal approval: ATF stopped enforcing the Form 1 approval rule for suppressors on October 9, 2026.
- Voluntary filing: ATF still accepts a Form 1 if you want the suppressor registered.
- Registering later: ATF says federal law “does not generally permit subsequent registration” of an unregistered item.
- Marking: ATF stopped enforcing the NFA marking rule, but the regulation (.003 inch deep, 1/16 inch tall) is still written.
- State law: unchanged; nine jurisdictions ban civilian possession, and many others require federal registration or compliance.
Form 1 Suppressor Choices by Situation
Each row is a situation, not a state. The state groups match our suppressor laws by state table, which links every state’s statute; the last column sends you to the row to read before you decide.
| Your situation | Can you make one under state law? | File a Form 1 anyway? | ||
|---|---|---|---|---|
| Can it be registered later? | Mark it anyway? | Where to check | ||
| No state suppressor law | Yes under state law, if you are not barred from owning a firearm | Optional federally. | ||
| File before you make it if you ever want it registered; ATF says registering later is generally not allowed | ATF is not enforcing the marking rule; I would mark it to the 27 CFR 479.102 standard anyway | Texas row and the other “No state ban” rows | ||
| State law tied to federal registration or compliance | Only on the state’s terms; North Carolina, for one, exempts suppressors possessed “in compliance with” the NFA | Yes. | ||
| File and wait for approval before you make it; an unregistered one can fail the state test | Yes; the Form 1 instructions require name, city and state per 479.102 | North Carolina row and the other registration rows | ||
| State bans suppressors | No; California makes possessing a silencer a felony (Penal Code § 33410) | No. ATF must deny a Form 1 that would put the maker in violation of law (26 U.S.C. § 5822) | Does not apply: do not make one | California row and the other banned rows |
| I may move or travel with it | Your home state decides where it is made; every state you enter decides whether you may bring it | Yes. | ||
| Registration is the record a registration state looks for, and ATF says adding it after the fact is generally not allowed | Yes, so the suppressor matches its paperwork wherever it goes | The federal section, then each destination state’s row | ||
| I want it registered | Yes, in any state that allows suppressors | File first, make it after approval. | ||
| ATF still accepts a Form 1 “voluntarily” | Yes; required by the Form 1 instructions | ATF Form 1 page |
The rows come from ATF’s October 9, 2026 guidance and its FAQ, the U.S. Code, 27 CFR 479.102, the ATF Form 1 instructions, North Carolina G.S. 14-288.8 and California Penal Code § 33410 (read on a labeled public.law copy because the official site refused the request). “Optional federally” means ATF says it will not enforce the rule; the statute itself still reads the same.
What ATF Said on October 9
On October 9, 2026, ATF published a press release, an open letter and an FAQ after the Justice Department chose not to appeal an August 2026 ruling in Silencer Shop Foundation v. ATF in the Northern District of Texas. That court order covered only the plaintiffs, but ATF applied its non-enforcement policy to everyone. The FAQ answers the Form 1 question in its own words: “No, because of ATF’s decision to exercise enforcement discretion,” and “unlicensed individuals no longer need to file a Form 1 and receive ATF approval.”
The FAQ’s list of rules ATF will stop enforcing includes “The requirement to apply and obtain prior approval to make NFA firearms” and “The NFA requirement to mark all NFA firearms.” It also keeps the door open: “Unlicensed individuals may voluntarily file Form 1s, if they wish to register their firearms or devices.” The press release says the guidance “does not supersede state and local laws.” Machine guns and destructive devices are left out of all of it and keep the full NFA process and the $200 tax.
I walked through the buying side of the same guidance in our piece on buying a suppressor without a tax stamp, and Freedom’s Lodge has the full legal breakdown in its ATF NFA guidance explainer. This page sticks to the making side.
Is a Form 1 Still Required?
Federally, ATF says no, as a matter of enforcement policy. On paper, the law reads exactly as it did on October 8. Section 5822 of the Internal Revenue Code still says “No person shall make a firearm” without filing the application and getting approval, and Section 5845 counts any silencer as an NFA “firearm.” Section 5861(f) makes it unlawful “to make a firearm in violation of the provisions of this chapter,” and Section 5871 sets the penalty at up to ten years and a $10,000 fine.
Think about it: a statute that is not being enforced is still a statute. ATF’s FAQ says so itself, warning that “Material changes in legal or factual circumstances could cause NFA enforcement to resume,” and naming a new tax from Congress or a dissolved court order as examples. So “not required” means “not enforced while this policy stands.” Fine, as long as you know that.
Should I Still File a Form 1?
Under the current ATF guidance that took effect on October 9, 2026, filing a Form 1 is no longer required to make a suppressor, since the agency is not enforcing NFA registration, prior approval, or the (already $0) tax for these items. Those who still choose to file point to the value of an official record: an approved Form 1 creates clear documentation of lawful manufacture that can simplify interstate travel, future transfers, or interactions with law enforcement, and it provides a measure of protection if enforcement policy later changes or if a state requires registration. On the other side, many people prefer not to file because it places their name, address, and the suppressor’s details on a permanent federal registry that has historically been used for tracking and, in some cases, later restrictions. With registration now optional, skipping the Form 1 keeps the build private, avoids any future bureaucratic entanglement, and eliminates the residual risk that an approved form could later be used against the owner, while still complying with the background-check and state-law requirements that remain in place.
Form 1 Engraving Requirements
The marking rule is 27 CFR 479.102. A maker identifies the suppressor with a serial number that does not duplicate one of their others, plus the maker’s name and the city and state where it was made, and the model (if designated) and caliber or gauge. Markings go at least .003 inch deep, and the serial number is at least 1/16 inch tall. For a suppressor built in pieces, the regulation points the marks at the outer housing that holds the internal sound-reduction parts.
The Form 1 itself repeats the point. Item 4h asks for the “maker’s name as registered, city and state as each will appear on firearm,” and the instructions say “All markings must comply with 27 CFR 478.92 and 479.102.” So if you file, you mark. If you skip the form, ATF’s FAQ says it is not enforcing the NFA marking requirement, but I would mark it anyway. An unmarked suppressor is an argument waiting to happen (with a game warden, a range officer or the next owner’s state).
States That Tie Legality to Registration
This is where homemade suppressors get people in trouble. ATF’s FAQ puts it plainly: “Most states require that individuals who possess NFA items comply with federal law or register them,” and “A minority of states prohibit the possession of most or all NFA items under state law.” On whether its own policy satisfies those state laws, ATF says to “Check with state and local authorities.”
North Carolina is a good example of the wording to look for. Its statute, G.S. 14-288.8, makes it a Class F felony to “manufacture, assemble, possess” a weapon of mass death and destruction, a term that includes “any muffler or silencer for any firearm,” and then exempts people who possess one “in compliance with 26 U.S.C. Chapter 53, §§ 5801-5871.” Federal non-enforcement did not rewrite Chapter 53, so an unregistered homemade suppressor in a state with language like that is a risk I would not take.
In a ban state, the Form 1 is not even an option. California Penal Code § 33410 says anyone who “possesses a silencer is guilty of a felony,” and Section 5822 tells ATF that applications “shall be denied if the making or possession of the firearm would place the person making the firearm in violation of law.” Our state-by-state map after the NFA ruling follows what has and has not moved since August; read your own state’s statute before you order a single part.
Parts, Kits and Solvent Traps
Federal law does not wait for a finished suppressor. Under 18 U.S.C. § 921(a)(25), a silencer includes “any combination of parts, designed or redesigned, and intended for use in assembling or fabricating” one, “and any part intended only for use in such assembly or fabrication.” Some states copy that wording. Michigan’s definition in MCL 750.224 includes “A part, designed or redesigned, and intended only for use in assembling or fabricating a muffler or silencer,” and possession is a felony carrying up to 5 years there unless one of the statute’s exceptions applies.
Form 1 vs. Form 4
A Form 1 is for making an NFA item yourself; a Form 4 is for a transfer, such as buying one. ATF stopped enforcing both approvals for suppressors on October 9, 2026, but buying from a dealer is not paperwork-free. The FAQ says these items “remain statutory “firearms” under the GCA, and all GCA requirements still apply,” so a dealer still runs a Form 4473 and a NICS background check.
Making one also does not license you to sell them, as the FAQ below covers. Build one for yourself, under your state’s law, or do not build one.
If Federal Enforcement Comes Back
Under the heading “Future Risk,” ATF’s FAQ says people who make or possess unregistered NFA firearms “are subject to felony penalties and forfeitures,” warns that enforcement could resume, and promises no grandfather clause. A registered Form 1 suppressor sits on the federal record either way.
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Frequently Asked Questions
Do I need a Form 1 to buy a suppressor?
No. A Form 1 covers making an NFA item, not buying one. Buying from a dealer since October 9, 2026 runs through a Form 4473 and a NICS background check, and the dealer still may not sell you a suppressor your state bans.
Does a Form 1 for a suppressor cost anything?
The federal making tax on a suppressor is $0 under 26 U.S.C. § 5821. You still supply fingerprints on an FD-258 card, a 2-by-2-inch photograph and a copy of the form for your chief law enforcement officer.
Can I register a homemade suppressor after I make it?
Not under current federal law as ATF reads it. ATF’s FAQ says federal law “does not generally permit subsequent registration,” so the only path is an amnesty of up to 90 days that the Attorney General is not required to hold.
Can I sell a suppressor I made on a Form 1?
Not as a business without a license; ATF’s FAQ says unlicensed individuals may not engage in the business of manufacturing or transferring these items. Gun Control Act limits on transfers to residents of other states and to prohibited persons still apply, and your state’s law applies on top of that.
Is ATF still processing Form 1 applications?
Yes. ATF says it will keep processing NFA applications because many states require registration, and its FAQ says unlicensed makers may file a Form 1 voluntarily. The Form 1 instructions take it on paper or through the ATF eForms system.
So file the Form 1, mark the suppressor, and keep the approval with your papers. It costs you an afternoon, and nobody has ever lost sleep over a suppressor that was TOO well documented.
Sources: ATF, “ATF issues guidance on National Firearms Act transfers” (October 9, 2026); ATF, “Update to NFA Transfer Guidance” FAQ; ATF, “Form 1 – Application to Make and Register NFA Firearm (ATF Form 5320.1)”; eCFR, “27 CFR 479.102, identification of firearms”; Cornell LII, “26 U.S.C. § 5822, making”; Cornell LII, “26 U.S.C. § 5821, making tax”; Cornell LII, “26 U.S.C. § 5845, definitions”; Cornell LII, “26 U.S.C. § 5861, prohibited acts”; Cornell LII, “26 U.S.C. § 5871, penalties”; Cornell LII, “18 U.S.C. § 921(a)(25), silencer definition”; North Carolina General Assembly, “G.S. 14-288.8, silencers and other weapons of mass death and destruction”; public.law (labeled mirror), “California Penal Code § 33410, possession of a silencer”; Michigan Legislature, “MCL 750.224, muffler or silencer”.
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