ATF Form 4: How to Buy an NFA Item, Step by Step

ATF Form 4 is the application you use to buy a National Firearms Act item — a suppressor, short-barreled rifle, short-barreled shotgun, machine gun, AOW, or destructive device — from a dealer. It is the 'transfer' form, as opposed to the Form 1 you use to make your own NFA item.

This guide walks through the Form 4 process from picking a dealer to taking your item home, and explains why wait times have dropped so dramatically since 2024.

This is general information, not legal advice; verify with the ATF or a qualified attorney.

When you use a Form 4

You file a Form 4 whenever you are buying an existing NFA item and having it transferred to you. The dealer (or individual seller, through a dealer) holds the item while the ATF processes the paperwork, and you take possession only after approval.

Since January 1, 2026, there is no transfer tax for suppressors, SBRs, SBSs, or AOWs — the One Big Beautiful Bill Act reduced those taxes to $0 (AOWs were previously $5, the rest $200). Machine guns and destructive devices still carry the $200 transfer tax. The approval process itself is unchanged for every category.

What you submit

A complete Form 4 package includes the application itself, payment of any applicable tax, fingerprint cards (or electronic prints), a passport-style photo, and CLEO notification. Under the 41F rule, if you buy through a trust or other legal entity, each responsible person must submit prints, a photo, and CLEO notice.

CLEO notification means you send a copy of your application to your local chief law enforcement officer. It is a notice — your CLEO does not approve or deny the transfer.

Completed Form 4
Tax payment only if applicable ($0 for suppressors, SBRs, SBSs, and AOWs since January 1, 2026; $200 for machine guns and destructive devices)
Fingerprints and passport-style photo
CLEO notification (notice, not approval)
Responsible-person paperwork for each trustee (if using a trust)

eForms vs. paper

You can file a Form 4 on paper or electronically through the ATF eForms system. Electronic filing is faster, and the ATF has invested heavily in modernizing eForms since 2024.

The practical result: an eFiled Form 4 for an individual or trust now often clears in days to a few weeks, rather than the 8-to-12-month waits that were common before the overhaul. Paper filings remain slower.

After approval

Once the ATF approves the transfer, your dealer receives the approved form with the tax stamp affixed, runs the standard point-of-sale background check, and releases the item to you.

Keep a copy of your approved Form 4 with the item. You do not need to carry the original, but having documentation on hand is wise.

Frequently asked questions

How long does a Form 4 take in 2026?

Thanks to the ATF's modernized eForms system, electronically filed Form 4 transfers for individuals and trusts frequently clear in days to a few weeks. Paper filings and cases flagged during the background check can still take longer.

What is the difference between Form 4 and Form 1?

A Form 4 is for buying (transferring) an existing NFA item from a dealer. A Form 1 is for making your own NFA item, such as building an SBR. Since January 1, 2026, neither carries a tax for suppressors, SBRs, SBSs, or AOWs; machine guns and destructive devices still carry the $200 tax.

Does my police chief have to approve the transfer?

No. You must send your CLEO a copy of the application as notification under the 41F rule, but the CLEO does not sign off or approve. Approval comes from the ATF.

Can I use a trust on a Form 4?

Yes, and many buyers do. A trust lets multiple responsible persons possess the item, but under 41F each responsible person must submit fingerprints, a photo, and CLEO notification with the application.

Last reviewed 2026-07-08.