What is a gun (NFA) trust in Missouri, how they work, how you fund them and more.

If you own or plan to buy a suppressor, a short-barreled rifle, or any other item regulated under the National Firearms Act, how you hold that item matters as much as the item itself. Federal law treats these firearms very differently from an ordinary hunting rifle, and a simple mistake — letting the wrong person hold a suppressor, or passing one to an heir the wrong way — can turn a law-abiding gun owner into a felon. A properly drafted gun trust is the tool most Missouri owners use to avoid exactly those problems. This guide explains what a gun trust is, how it works, what the law requires, and how to fund it.

First, what is an NFA firearm?

The National Firearms Act (NFA), first passed in 1934 and administered by the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF), regulates a specific category of firearms and accessories that are legal to own but tightly controlled. Each must be registered with the ATF, and each transfer is tracked. The regulated items include:

Ordinary rifles, shotguns, and handguns — what the law calls Title I firearms — are not NFA items and do not require registration. The rules described in this article apply to the NFA items above.

What is a gun trust?

A gun trust, sometimes called an NFA trust, is a revocable living trust drafted specifically to acquire, hold, use, and eventually pass on firearms — especially NFA items. Instead of registering a suppressor to you as an individual, you register it to the trust. The trust becomes the legal owner, and the people you name in the trust are authorized to possess and use the firearms it holds, according to the terms you set.

In Missouri, a gun trust is not a special statutory creation. It is an ordinary revocable trust formed under the Missouri Uniform Trust Code (Chapter 456 of the Revised Statutes of Missouri), drafted with the additional language and safeguards that federal firearms law demands. That combination — a valid Missouri trust plus NFA-specific provisions — is what makes a gun trust work.

Why use a gun trust? The real benefits

Even with the tax now eliminated on the most common items, the reasons to use a trust rather than individual registration are unchanged, and they are substantial.

More than one person can legally possess the firearm. When an NFA item is registered to an individual, only that individual may possess it. If your spouse or adult child so much as has access to your suppressor while you are away, that can be an unlawful possession. When the item is held in a trust, every co-trustee you name is a lawful possessor. This single feature is the most common reason Missourians choose a trust.

It avoids probate and prevents an accidental illegal transfer at death. If an NFA item is registered to you individually and you die, it cannot simply be handed to an heir. An improper transfer of an NFA firearm is a federal felony, and a well-meaning executor can create serious criminal exposure without realizing it. A trust holds the firearm across your lifetime and beyond, letting your named successor trustee and beneficiaries take over under terms already written and vetted, without the item passing through probate.

It plans for incapacity. If you become unable to manage your affairs, your successor trustee can lawfully manage and safeguard the firearms rather than leaving them in legal limbo.

It builds in knowledge and protection for your heirs. A good gun trust educates the people who will one day inherit these items about what they can and cannot legally do, reducing the chance that an heir unknowingly commits a felony.

The value of a gun trust is not a tax loophole. It is lawful shared possession today and a safe, legal path to your heirs tomorrow.

How a gun trust works: the players

A gun trust uses the same roles as any trust, and understanding them is the key to understanding the whole structure.

The settlor (also called the grantor) is the person who creates and funds the trust — usually you. The trustee manages the trust and is typically also the settlor during life, so you keep full control. Co-trustees are the additional people you authorize to possess and use the firearms, such as a spouse or adult child. The successor trustee steps in when you die or become incapacitated. Finally, the beneficiaries are the people who will ultimately receive the firearms or their value.

Because it is revocable, you can amend a gun trust during your lifetime — adding or removing co-trustees, changing beneficiaries, or updating instructions as your family and your collection change.

The requirements: what it actually takes

A working gun trust has to satisfy two separate bodies of law at once. It must be a valid trust under Missouri law, and every NFA acquisition it makes must satisfy federal ATF rules.

Missouri trust requirements

Under the Missouri Uniform Trust Code, a valid trust generally requires a settlor with legal capacity and the intent to create a trust, at least one identifiable beneficiary, a trustee with real duties, and trust property. As a practical matter, a gun trust should be in writing, signed by the settlor, and notarized, and it must be funded — meaning actual property is placed into it. An unfunded trust is just paper. Funding is covered in detail below.

Federal requirements and Rule 41F

When a trust applies to make or receive an NFA firearm, ATF Rule 41F (effective July 13, 2016) governs the process. The rule introduced the concept of a responsible person — defined as anyone who has the power to direct the management and policies of the trust as to the firearm. In most gun trusts, that means the settlor and every co-trustee, but not the beneficiaries who have no such authority.

For each application, every responsible person must:

One important point of history: before Rule 41F, gun trusts were popular partly because they let owners skip the fingerprinting and the old CLEO sign-off. Rule 41F closed that gap, but it also changed the CLEO step for everyone from an approval requirement to a simple notification. The paperwork is now similar whether you apply as an individual or through a trust — which is exactly why the trust’s real advantages, shared possession and clean succession, are now the reason to use one.

The two ATF forms you will encounter

Acquiring an NFA item in your trust happens through one of two ATF forms, usually filed through the ATF eForms system:

ATF Form 1 (Application to Make and Register a Firearm) is used when you intend to make an NFA item yourself — for example, building an SBR from an existing rifle or assembling a suppressor from a kit. You must have an approved Form 1 in hand before you make the item. Building first and filing later is a federal felony.

ATF Form 4 (Application for Tax Paid Transfer and Registration of Firearm) is used when you buy an existing NFA item, such as purchasing a suppressor from a dealer. The dealer holds the item until the ATF approves the transfer to your trust.

Missouri law, specifically

Missouri is a permissive state for NFA ownership. State law does not add a separate permit or registry on top of the federal system. Under RSMo 571.020, items such as machine guns, suppressors, and short-barreled rifles and shotguns are restricted only when possessed in violation of federal law. The statute expressly exempts items possessed in conformity with applicable federal law. In plain terms: if your NFA item is properly registered and compliant under the federal NFA, Missouri does not stand in your way.

That means a Missouri resident, or a Missouri gun trust, may lawfully own suppressors, SBRs, SBSs, AOWs, and even transferable pre-1986 machine guns, provided every federal requirement is met. The trust itself is formed and governed under Missouri’s Uniform Trust Code, giving you a single Missouri instrument that satisfies both state trust law and federal firearms law.

How to fund your gun trust

“Funding” simply means putting property into the trust so that it legally owns something. A gun trust that has been signed but never funded provides no protection. There are three ways property gets into a gun trust, and most owners use more than one.

1. Acquire new NFA items directly in the trust’s name. This is the cleanest method. When you file a Form 1 to make an item or a Form 4 to buy one, you list the trust as the applicant or transferee. When the ATF approves the application, the item is registered to the trust from the start. With the tax now at $0 on suppressors, SBRs, SBSs, and AOWs, the cost barrier to building a collection inside the trust is lower than it has ever been.

2. Transfer NFA items you already own into the trust. If you already own a registered suppressor or SBR individually, moving it into your trust is itself a transfer, and it requires an approved Form 4 from you to the trust. You cannot simply write the item onto a schedule and consider it done; the ATF must approve the transfer. The tax on that transfer is now $0 for the covered items, which has made consolidating personally owned items into a trust far more attractive.

3. Add ordinary (Title I) firearms and other property by assignment. Your regular rifles, shotguns, and handguns are not NFA items and can be placed into the trust through a written assignment or a schedule of property attached to the trust, with no ATF form required. Many attorneys also fund the trust at creation with a small item of personal property or a nominal sum of cash, so that the trust owns something the moment it is signed and is unquestionably valid before any firearms are added.

Common and costly mistakes

The stakes with NFA firearms are unusually high because errors are federal felonies, not paperwork problems. The most frequent mistakes are building an SBR or suppressor before the Form 1 is approved; relying on a bargain online trust template that is not compliant with Missouri law or current ATF rules; forgetting to update the trust when co-trustees or beneficiaries change; and mishandling an NFA item at the owner’s death by treating it like an ordinary rifle. Each of these is avoidable with a properly drafted trust and sound guidance, and each can be extremely serious if ignored.

Helpful resources

For readers who want to go to the primary sources:

This article is provided for general educational purposes only and is not legal advice; reading it does not create an attorney-client relationship. Federal and Missouri firearms laws are complex, carry serious criminal penalties, and change over time — and as of this writing, litigation is pending over the future of NFA regulation following the elimination of the tax. Do not make, transfer, or possess any NFA firearm without confirming current federal and state requirements and, ideally, consulting a qualified attorney. Verify all forms, fees, and procedures directly with the ATF before acting. Sources include the ATF (National Firearms Act, Rule 41F, and forms guidance), the Revised Statutes of Missouri (RSMo 571.020 and Chapter 456), and the 2025 federal reconciliation legislation effective January 1, 2026.