If you’ve considered purchasing a suppressor, short-barreled rifle, machine gun, or another firearm historically regulated under the National Firearms Act (NFA), you’ve probably encountered terms like NFA, FFL, SOT, Class 3, Form 4, Form 3, and Form 1.
For new firearm owners, this terminology can be confusing. DFW Shooting Sports wants to help readers understand what these terms mean, how they relate to one another, and what current federal and Texas laws mean for firearm ownership and transfers.
The National Firearms Act is a federal law that historically imposed special taxes, registration requirements, and transfer procedures on certain categories of firearms. Recent legislation, court decisions, and ATF guidance have significantly changed the federal enforcement landscape for some of these items.
Important: Firearm laws and enforcement policies can change. Always verify the current requirements for your particular firearm and circumstances before purchasing, manufacturing, modifying, transferring, possessing, or transporting it.
Updated October 9, 2026
On October 9, 2026, the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) issued new guidance explaining how it will handle certain firearms historically regulated under the NFA.
The guidance covers suppressors (silencers), short-barreled rifles (SBRs), short-barreled shotguns (SBSs), and certain other concealable firearms classified as “any other weapons” (AOWs).
Under this nationwide enforcement policy, ATF will no longer enforce specified NFA requirements for these covered items, including traditional requirements for prior federal approval, NFA registration, and associated making and transfer taxes.
This follows a federal court decision and the Department of Justice’s decision not to appeal. The Department extended the non-enforcement policy nationwide.
This does not mean every firearm law has disappeared. The Gun Control Act, required dealer procedures, background checks, restrictions on prohibited persons, and applicable state and local laws remain important. Machine guns and destructive devices also remain subject to applicable NFA requirements.
A short-barreled rifle, commonly called an SBR, is generally a rifle with a barrel shorter than 16 inches or a firearm that otherwise meets the applicable federal definition.
Under the October 9 ATF guidance, the agency will no longer enforce specified NFA approval and registration requirements for covered SBRs.
However, other federal laws still apply. The legal requirements for manufacturing, purchasing, possessing, transferring, and transporting an SBR are not necessarily identical.
Before purchasing, building, modifying, transferring, or traveling with an SBR, verify the current rules that apply to your circumstances.
The guidance also covers suppressors, short-barreled shotguns, and certain AOWs.
For these covered items, ATF has announced that it will not enforce specified NFA approval, registration, and related tax requirements.
The $200 federal NFA tax remains applicable to machine guns and destructive devices. Those categories continue to be subject to the applicable NFA requirements.
Yes. The updated ATF guidance does not eliminate the ordinary federal requirements governing firearm sales.
Licensed firearms dealers must continue to complete ATF Form 4473, conduct required background checks through the National Instant Criminal Background Check System (NICS), maintain required records, and comply with applicable federal, state, and local laws.
Federal restrictions on possession by prohibited persons remain in effect. State law may impose additional restrictions, and the rules may differ depending on the firearm and transaction.
Additional care is necessary when transporting an SBR or short-barreled shotgun across state lines.
ATF states that the new guidance does not eliminate the applicable federal interstate transportation approval requirement for these firearms. ATF Form 20 is used to request the applicable approval.
Before traveling, confirm current federal requirements and the laws of every state involved. Do not assume that a federal change automatically makes an otherwise restricted firearm legal in another state.
Because the legal landscape is changing, firearm owners and prospective buyers should:
Review the latest ATF guidance and FAQs.
Confirm that a firearm is legal to possess and transfer under applicable federal, state, and local law.
Understand that standard purchase procedures and background checks may still apply.
Verify current requirements for interstate transportation, firearm modifications, and transfers.
Consult a qualified firearms attorney when the legality of a specific firearm or transaction is unclear.
Owners should also understand that a non-enforcement policy can change. Do not assume that a firearm will automatically be grandfathered or eligible for registration if the policy or applicable law changes.
Official ATF resources:
An FFL, or Federal Firearms License, is issued by ATF and authorizes a person or business to conduct specified activities involving firearms under federal law.
An SOT, or Special Occupational Taxpayer, refers to a business or individual who has paid the applicable special occupational tax for certain activities involving NFA firearms.
An FFL that engages in qualifying business activities involving NFA firearms must meet the applicable SOT requirements in addition to maintaining the appropriate federal license.
The three current SOT classifications are:
Class 1: Importer
Class 2: Manufacturer
Class 3: Dealer
A Class 3 SOT is associated with dealing in NFA firearms. It is not a special license that a customer must obtain to own an NFA firearm.
When people refer to a “Class 3 dealer,” they generally mean a firearms dealer with the appropriate FFL and Class 3 SOT status to conduct qualifying business involving NFA firearms.
There is no federal firearm category called a “Class 3 firearm.” The term describes the dealer’s occupational tax classification, not the firearm or the customer.
It is also worth clearing up a common misconception: the current federal SOT classifications are Class 1, Class 2, and Class 3. Class 4 is not a current SOT classification for ordinary NFA dealers.
The requirements for dealers and other businesses remain separate from the rules that apply to individual firearm owners. The October 2026 enforcement policy does not eliminate the applicable SOT requirements for businesses engaged in covered activities.
The National Firearms Act historically regulates specific categories of firearms and devices, including:
Suppressors, also called silencers
Machine guns
Short-barreled rifles (SBRs)
Short-barreled shotguns (SBSs)
Destructive devices
Certain other weapons (AOWs)
The NFA established special tax, registration, and transfer requirements for these categories. The current enforcement treatment depends on the firearm, the transaction, and applicable federal guidance.
The October 9, 2026 ATF policy changes the enforcement of specified NFA requirements for suppressors, SBRs, SBSs, and certain AOWs. It does not extend the same treatment to machine guns and destructive devices.
For current federal definitions and guidance, consult the ATF’s National Firearms Act resources.
ATF Form 4 is traditionally known as the Application for Tax Paid Transfer and Registration of Firearm. It has been used for applicable NFA firearm transfers to individuals and other non-licensees.
Historically, a customer purchasing a suppressor from a dealer generally had to complete the applicable paperwork, satisfy the federal requirements, and wait for ATF approval before taking possession.
The October 9, 2026 guidance changes ATF’s enforcement of specified approval, registration, and tax requirements for covered firearms. As a result, the traditional Form 4 process is no longer federally enforced in the same way for those covered items.
However, ATF continues to publish its forms and guidance, and state law may independently require registration or compliance with federal procedures. ATF also states that it will continue processing applications that are submitted.
Before relying on a particular transfer process, confirm the current federal guidance and applicable state requirements.
Find official forms and instructions at the ATF Firearms Forms page.
These forms serve different purposes. Understanding their traditional roles makes NFA terminology easier to follow.
Form 3 — Transfers Between Qualifying Licensees
ATF Form 3 has traditionally been used for qualifying tax-exempt transfers of NFA firearms between eligible federal firearms licensees with the appropriate SOT status.
Form 4 — Transfers to Individuals and Other Non-Licensees
Form 4 has traditionally been used for applicable NFA transfers to an individual or other non-licensee. It is the form most commonly associated with purchasing a suppressor through a dealer under the former federal process.
Form 1 — Making an NFA Firearm
ATF Form 1 has traditionally been used to apply to make and register an NFA firearm. Depending on the firearm and circumstances, this could involve manufacturing or modifying a firearm in a way that places it within an NFA category.
The October 2026 guidance changes ATF’s enforcement of specified approval and registration requirements for covered items. It does not mean every firearm-related form or legal requirement has disappeared.
Consult the current ATF Firearms Forms resource for the latest forms and instructions.
Texas law must be considered separately from federal law.
Texas generally permits suppressor ownership under applicable law, but the legality of a specific firearm, transaction, or use depends on the circumstances. Texas also has statutes addressing firearm suppressors, including provisions concerning suppressors manufactured in Texas.
The interaction between state law and federal law can be complicated. A Texas statute does not automatically eliminate federal requirements, and a federal enforcement-policy change does not automatically override state restrictions.
For current legal information, review the Texas Constitution and Statutes and the applicable federal laws and ATF guidance.
If you are considering purchasing, manufacturing, modifying, or transferring a suppressor, verify the current rules for your specific situation rather than relying on older articles or generalized online advice.
The October 9, 2026 ATF announcement represents a significant change in the federal enforcement of NFA requirements for covered suppressors and certain other firearms.
For covered items, ATF has announced that it will not enforce specified prior-approval, registration, and tax requirements. However, this does not mean suppressors or other covered items are free from every federal or state restriction.
The following requirements and considerations remain important:
Standard firearm dealer procedures and required background checks still apply.
Federal restrictions on possession by prohibited persons remain in effect.
State laws may impose additional restrictions, including registration requirements.
Special Occupational Tax requirements remain applicable to businesses engaged in qualifying NFA-related activities.
Interstate transportation rules for SBRs and SBSs require particular attention.
Machine guns and destructive devices remain subject to the applicable NFA requirements.
ATF has also stated that it will continue processing NFA applications that are submitted. Owners should carefully consider the implications before withdrawing an existing application or requesting removal of an item from the federal registry.
For the most current information, consult the ATF and U.S. Code, and seek qualified legal advice when needed.
If the terminology still sounds confusing, here’s a simple breakdown:
FFL: The federal firearms license held by an eligible person or business.
SOT: Special Occupational Tax status associated with certain NFA-related business activities.
Class 3 SOT: The classification traditionally associated with dealing in NFA firearms.
NFA: The National Firearms Act, which regulates specified categories of firearms and devices.
Form 3: Traditionally used for qualifying transfers between eligible FFL/SOT holders.
Form 4: Traditionally used for applicable NFA transfers to individuals and other non-licensees.
Form 1: Traditionally used to apply to make and register an NFA firearm.
The most important distinction is that Class 3 describes a dealer’s occupational tax classification, while Form 4 describes a particular type of transfer application. Neither is a special license that a customer obtains to own a firearm.
The current requirements depend on the item, the transaction, and the laws and guidance in effect at the time.
DFW Shooting Sports encourages firearm owners and prospective buyers to stay informed about changes in federal and Texas firearm laws.
Whether you’re researching suppressors, short-barreled rifles, or other firearms historically regulated under the NFA, use official ATF resources to understand the current rules and verify the requirements that apply to your circumstances.
For questions involving a specific purchase, transfer, firearm modification, or interstate trip, consult the appropriate licensed dealer or a qualified firearms attorney.
Disclaimer: This article is provided for general educational purposes only and is not legal advice. It does not establish that a particular firearm or transaction is lawful. Federal statutes, court decisions, ATF guidance, and state and local laws may change. Always verify current requirements before purchasing, manufacturing, modifying, transferring, possessing, or transporting a firearm.