Buying a suppressor, SBR, or other NFA item from a dealer? You'll need to complete ATF Form 4, and that means submitting fingerprints. The requirements have changed over the years, and the shift to electronic filing has made the process faster but created new questions about format requirements.
This guide covers exactly what you need to know about Form 4 fingerprint requirements in 2026.
In This Guide
Form 4 Fingerprint Requirements Overview
ATF Form 4 is required for transferring ownership of existing NFA items from a dealer (or individual) to you. Common Form 4 purchases include:
- Suppressors (Silencers): The most common Form 4 item
- Short-Barreled Rifles (SBRs): Factory-built or dealer-converted
- Short-Barreled Shotguns (SBSs): Shotguns with barrels under 18"
- Machine Guns: Transferable pre-1986 registered machine guns
- Any Other Weapons (AOWs): Various specialty NFA items
- Destructive Devices: Large-bore firearms, grenades, etc.
Every Form 4 application requires fingerprint submission from the applicant (or all responsible persons for trusts/corporations).
Who Needs to Submit Fingerprints?
Individual Applicants
If you're applying as an individual, only you submit fingerprints. This is the simplest scenario—one person, one set of fingerprints, one EFT file.
NFA Trust Applicants
Under ATF Rule 41F (implemented 2016), every "responsible person" on your trust must submit fingerprints. Responsible persons typically include:
- The settlor/grantor (person who created the trust)
- All trustees
- Any beneficiary with power to possess NFA items
- Successor trustees (in some trust structures)
Important: A trust with 4 responsible persons requires 4 separate fingerprint submissions. Plan accordingly when pricing out your NFA purchase.
Corporate/LLC Applicants
Similar to trusts, all responsible persons must submit fingerprints. This includes:
- Officers
- Directors
- Members with possession authority
- Anyone who can directly exercise control over the NFA item
Format Requirements: EFT for eForms
Electronic Filing (Recommended)
If your dealer files Form 4 electronically through ATF eForms (which most do in 2026), you need EFT format fingerprints:
- File type: .eft (Electronic Fingerprint Transmission)
- Standard: ANSI/NIST-ITL compliant
- One file: Per responsible person
- Upload: Through ATF eForms portal
Paper Filing (Slower)
Paper Form 4 applications require physical FD-258 fingerprint cards:
- Two (2) FD-258 cards per responsible person
- Mailed with the paper application
- Processing time: 12-18+ months
Recommendation: Always choose electronic filing with EFT fingerprints. Processing is 3-4x faster than paper applications.
Individual vs Trust: Fingerprint Implications
Filing as an Individual
Pros:
- Only one person's fingerprints needed
- Simpler paperwork
- Lower total cost
Cons:
- Only you can legally possess the NFA item
- Spouse/family cannot use it without you present
- Succession requires probate
Filing with an NFA Trust
Pros:
- Multiple trustees can possess NFA items
- Simplified inheritance (no probate needed)
- Flexibility to add/remove trustees
Cons:
- Every trustee needs fingerprints
- More coordination required
- Higher total fingerprint costs
Trust with Multiple Responsible Persons?
SlapEFT's Trust Bundle provides EFT conversion for all trustees at a discounted rate. Perfect for family trusts.
View Trust Bundle →Working with Your Dealer
When you purchase a suppressor or other NFA item from a dealer, here's how the fingerprint process typically works:
Step 1: Purchase Your NFA Item
Choose your suppressor, pay the dealer, and begin the Form 4 process. Note: With the 2026 tax stamp changes, the $200 NFA tax may no longer apply.
Step 2: Gather Your Documents
Your dealer will need:
- Completed ATF Form 4473
- Passport-style photo
- Trust documents (if applicable)
- Fingerprints in EFT format
Step 3: Submit Fingerprints
Provide your EFT file to the dealer. Options:
- Email your .eft file to the dealer
- Upload through dealer's customer portal
- Some dealers handle in-house (may charge extra)
Step 4: Wait for Approval
Your dealer submits the Form 4 with your fingerprints. Current eForm 4 processing is approximately 90-180 days.
Step 5: Pick Up Your Item
Once approved, complete another 4473 at the dealer and take possession of your NFA item.
State-by-State Considerations
Fingerprint requirements are federal, but state laws affect your overall Form 4 process:
NFA-Friendly States
Texas, Florida, Arizona, Georgia, Alabama, and most states allow civilian ownership of suppressors and most NFA items. Fingerprinting services are widely available.
Restrictive States
California, New York, New Jersey, Massachusetts, and a few others either ban suppressors or severely restrict NFA items. Check your state laws before purchasing.
Suppressor-Legal States (as of 2026)
42 states allow civilian suppressor ownership. The following states prohibit them: California, Delaware, Hawaii, Illinois, Massachusetts, New Jersey, New York, and Rhode Island.
State Law Note: Even in suppressor-legal states, local ordinances may vary. Verify with your dealer and local authorities before purchasing.
Form 4 Timeline & What to Expect
Electronic Form 4 (with EFT Fingerprints)
- Day 1: Purchase item, submit fingerprints to dealer
- Week 1: Dealer submits eForm 4 to ATF
- Days 30-180: ATF processing (varies by volume)
- Approval Day: Dealer notifies you
- Pickup: Complete 4473, take possession
Current Processing Times (January 2026)
- eForm 4 (individual): 90-150 days average
- eForm 4 (trust): 100-180 days average
- Paper Form 4: 12-18 months (avoid if possible)
Factors Affecting Your Wait Time
- Background check complexity
- Document/fingerprint quality
- ATF examiner workload
- Application completeness
Frequently Asked Questions
Does the dealer submit my fingerprints, or do I?
Typically, you provide the EFT file to your dealer, and they upload it as part of the Form 4 submission. Some dealers have kiosks or services to help create your EFT file (often for an additional fee).
Can I use the same EFT file for multiple Form 4 purchases?
Absolutely! Once you have an EFT file, it works for all NFA applications—Form 1, Form 4, everything. Save your file and reuse it for every suppressor, SBR, or other NFA purchase.
What if my fingerprints get rejected?
Fingerprint rejections usually result from poor quality images or incorrect file format. If using SlapEFT-converted files, quality issues are rare. Contact your dealer to understand the specific rejection reason.
Do I need fingerprints if I'm buying from a private seller?
Yes. Private party NFA transfers (Form 4) also require fingerprints. The transfer must go through a dealer (Class 3 SOT), and fingerprint requirements are the same.
My trust has 5 people. Do we all need fingerprints?
Yes, all responsible persons need fingerprints. For a 5-person trust, that's 5 EFT files. Consider SlapEFT's Trust Bundle for volume pricing.
How long are my fingerprints valid?
Your EFT file never expires. Fingerprints are permanent biometric data, so a file created today works for applications years from now.
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