A single-shot NFA trust is a legal entity built to hold exactly one item regulated under the National Firearms Act — one silencer, one short-barreled rifle, one short-barreled shotgun, or one other NFA firearm. Each serialized item sits in its own trust, with its own list of authorized people, separate from any other NFA property you own. The trust is the registered owner in the National Firearms Registration and Transfer Record.1Office of the Law Revision Counsel. 26 USC Chapter 53 – Machine Guns, Destructive Devices, and Certain Other Firearms
Why One Item Per Trust
A traditional NFA trust holds many items on a single schedule. Every person named as a responsible person on that trust has to submit fingerprints, a passport-style photo, and a background-check questionnaire each time a new item is added. Four co-trustees, a new silencer, four new sets of paperwork.
Splitting each item into its own trust solves that. You can name different people on different trusts, so a hunting partner authorized to use one silencer doesn’t have to be added to the trust that holds your short-barreled rifle. Adding a new item to your collection means creating a new trust rather than re-papering everyone attached to the old ones. For buyers who plan to accumulate items over time, that’s the practical draw.
Who Has to Be on the Trust
Every trust needs three roles filled: a settlor who creates it, a trustee who manages the item, and a beneficiary who receives the item if the trust terminates or the settlor dies. In practice the settlor usually serves as the initial trustee, so one person covers both at the outset.
Federal regulations define a “responsible person” as anyone with the power to direct the trust’s management or to possess, transport, or transfer a firearm on the trust’s behalf. Settlors, trustees, and co-trustees all qualify. A beneficiary who lacks those powers generally does not.2eCFR. 27 CFR 479.11 – Meaning of Terms The consequence matters: a beneficiary who isn’t also a co-trustee can’t possess or use the item alone. If you want someone to handle the item on their own, name them as a co-trustee.
Who Can’t Be On It
Every responsible person must be legally eligible to possess firearms. Federal law bars several categories, including anyone with a felony conviction, a fugitive from justice, an unlawful user of a controlled substance, a person adjudicated as mentally defective or committed to a mental institution, an unlawful alien, someone dishonorably discharged from the Armed Forces, a person who has renounced U.S. citizenship, someone subject to a qualifying domestic restraining order, and anyone with a misdemeanor domestic violence conviction. Anyone under indictment for a felony is also prohibited from receiving firearms.3Bureau of Alcohol, Tobacco, Firearms and Explosives. Identify Prohibited Persons If anyone on the trust falls into these categories, the ATF will deny the application, and knowingly adding a prohibited person creates criminal exposure.
What It Costs in 2026
The federal tax stamp changed significantly in 2026. Congress eliminated the tax for most NFA items through Public Law 119-21, effective for calendar quarters beginning more than 90 days after July 4, 2025. Under 26 U.S.C. § 5811, the transfer tax is now $200 for machineguns and destructive devices, and $0 for all other NFA firearms, including silencers, short-barreled rifles, short-barreled shotguns, and “any other weapons.”4Office of the Law Revision Counsel. 26 USC 5811 – Transfer Tax
The making tax under 26 U.S.C. § 5821 works the same way. Form 1 applications for items you build yourself cost $200 for machineguns and destructive devices and $0 for everything else.5Office of the Law Revision Counsel. 26 USC 5821 – Making Tax For most people using a single-shot trust to buy a silencer or short-barreled rifle, the old $200 barrier is gone.
The Paperwork
The Trust Document
The trust itself is a written instrument that names the parties, identifies the NFA item by serial number, and sets out rules for management and succession. Most buyers use pre-drafted single-shot trusts from firearms retailers or online legal services rather than hiring an attorney to draft one from scratch. Once signed, the trust should be notarized.
ATF Form 4 or Form 1
When buying an NFA item from a dealer, you file ATF Form 4 (Application for Tax Paid Transfer and Registration of Firearm). It captures the transferor (the dealer), the transferee (your trust), and the firearm details: serial number, manufacturer, model, caliber, and barrel length. Every one of those fields must match the trust document exactly. If you’re building or assembling an item yourself, such as converting a pistol into a short-barreled rifle, you file Form 1 instead.
Form 5320.23 for Every Responsible Person
Every responsible person named in the trust completes ATF Form 5320.23, which captures personal background information and criminal history. Each also submits two FD-258 fingerprint cards and a passport-style photograph.6Bureau of Alcohol, Tobacco, Firearms and Explosives. Background Checks for Responsible Persons (Final Rule 41F) This runs with every application the trust files, not just the first.
For each person you need a full legal name, current physical address, date of birth, and Social Security number. Mismatches with federal databases cause rejections. On the item, double-check the serial number character by character; a single wrong digit sends the application back.
CLEO Notification
Under ATF Rule 41F, you must send a completed copy of the Form 4 or Form 1 to the chief law enforcement officer in the jurisdiction where the trust is located, and each responsible person must send a copy of their Form 5320.23 to the CLEO where they live.6Bureau of Alcohol, Tobacco, Firearms and Explosives. Background Checks for Responsible Persons (Final Rule 41F) The CLEO is typically the local chief of police, county sheriff, head of state police, or a local district attorney. It’s a notification only; the CLEO cannot block the application.
How Long Approval Takes
You can file through the ATF’s eForms portal or mail paper forms to the NFA Division. As of March 2026, published average processing times for trust filings are 25 days for Form 4 through eForms and 20 days by paper. Form 1 runs 49 days electronically and 64 days on paper.7Bureau of Alcohol, Tobacco, Firearms and Explosives. Current Processing Times These are averages, and background-check hits or submission surges push individual applications longer. You cannot legally take possession of the item until the tax stamp is in hand.
Adding People Later
Once the stamp is issued and the item is in your possession, the settlor can amend the trust to add or remove co-trustees. A written, signed amendment is enough at the trust level, and the new co-trustee can legally possess and use the item without the settlor present. You don’t need to notify the ATF when you add someone after approval.
The catch: the next time the trust files anything with the ATF, every responsible person at that time has to complete Form 5320.23 with fresh fingerprints and photo.8Bureau of Alcohol, Tobacco, Firearms and Explosives. General 41F Questions and Answers Because a single-shot trust holds only one item, that next filing usually never comes, which is exactly the workload the structure is designed to avoid. Anyone you add must still be legally eligible to possess firearms.
What Happens When the Settlor Dies
The trust continues to hold the NFA item when the settlor dies, so the item does not become unregistered during the transition. The successor trustee named in the trust document manages the property in the meantime. To formally transfer the item to a beneficiary, the executor or successor trustee files ATF Form 5, and transfers to lawful beneficiaries or heirs through an estate are exempt from the transfer tax.9Bureau of Alcohol, Tobacco, Firearms and Explosives. ATF Form 5 (5320.5) – Application for Tax Exempt Transfer and Registration of Firearm Transfers to anyone who isn’t a beneficiary or heir go through the standard Form 4 process with any applicable tax.
The planning point: if the trust document doesn’t clearly name a successor trustee and beneficiary, the item can sit in legal limbo while a probate court sorts things out, and it must remain secured against anyone not authorized to possess it during that time.
Constructive Possession and the Penalty Range
NFA violations are federal felonies. A conviction under Chapter 53 carries up to 10 years in prison, a fine of up to $10,000, or both.10Office of the Law Revision Counsel. 26 USC 5871 – Penalties Possessing an unregistered item, skipping a required tax, and transferring outside the proper forms all fall inside that range.
Constructive possession is the trap that catches careless trust owners. If a non-trustee household member has unsupervised access to the item, say by knowing the safe combination, prosecutors can argue that person illegally possessed it without ever touching it. Naming household members as co-trustees on the trust is the cleanest fix.
Interstate Travel and State Law
Federal law makes it illegal for a private citizen to transport a machinegun, short-barreled rifle, short-barreled shotgun, or destructive device across state lines without prior written authorization from the ATF.11Office of the Law Revision Counsel. 18 USC 922 – Unlawful Acts Authorization comes through ATF Form 5320.20, which lists the firearms, origin, destination, and travel dates. A copy of the approved form must travel with the items.12Bureau of Alcohol, Tobacco, Firearms and Explosives. Application to Transport Interstate or to Temporarily Export Certain NFA Firearms (Form 5320.20) Silencers are the exception: 18 U.S.C. § 922(a)(4) doesn’t list them, so Form 5320.20 isn’t required to take one across state lines.
Federal registration doesn’t override state law. Several states prohibit civilian ownership of specific NFA items, particularly silencers, and an approved tax stamp does not make possession legal in a state that bans the item. Confirm that your state allows civilian ownership of the specific type of item you want to register before starting a trust, and check the destination state before you travel.