The final ATF pistol-brace regulation goes into effect January 31, 2026. If you own an AR pistol, AK pistol, or any braced firearm, you need to know exactly what changed — and what you can still legally own without registering as an SBR. We cut through the FUD and give you the plain-English truth plus 9 configurations that are 100% compliant under the new rule.
1. The Final 2026 Rule in Plain English (Effective Jan 31, 2026)
ATF is using a revised “Worksheet 4999” point system plus objective criteria (weight, overall length, surface area the brace contacts, etc.). Anything that scores 4 points or more on Section III OR fails the objective tests is classified as a short-barreled rifle — unless it was registered during the 2023–2024 amnesty. Key take-aways:
- Grandfathered tax-free SBRs from the 2023 amnesty are still good — forever.
- Most original “arm braces” (SBA3, SBA4, Tailhook, etc.) are still legal IF the complete firearm stays under the new weight & length thresholds.
- Anything over the limits must be reconfigured, destroyed, or Form-1’d as an SBR (still free tax stamp if you act before the cutoff).
2. What the ATF Actually Measures Now (Worksheet 4999 Explained)
- Overall Length (OAL) with brace fully extended
- Weight with empty magazine & optic
- Surface area of rear contact
- Presence of certain “rifle” features (vertical foregrip, etc.)
3. Grandfathered Braces vs New Rules – The Complete List
- SB Tactical SBA3 / SBA4 → Still legal on most pistols under 12.5″
- SB Tactical FS1913 / TF1913 → Legal
- Tailhook Mod 1 & Mod 2 → Legal
- Shockwave Blade 2.0 → Legal
- Any “brace” marketed as a stock after Jan 31 → Illegal without Form 1
4. 9 Pistol + Brace Configurations That Pass ATF Criteria in 2026
These are real-world builds that score under the threshold on the new worksheet:
- 10.5–11.5″ barrel + SBA3/SBA4 + lightweight BCG & handguard (under 64 oz)
- 11.5″ + Tailhook Mod 2 + LAW folder
- Honey Badger 7–10″ with factory OEM brace
- MCX Virtus 11.5″ with factory folding brace
- 12.5″ mid-length + SBA4 + carbon-fiber handguard
- ARP 5.5–7.5″ with KAK blade
- Flux Defense MP17 (still passes)
- CZ Scorpion with factory folding brace
- B&T APC9 with factory brace
5. How to Register an Existing SBR for Free Before the Deadline
6. State-by-State Bans & Restrictions You Still Have to Watch
Even if ATF says it’s okay, CA, CT, NY, NJ, WA, IL, etc. may still ban braced pistols. See the map in the free PDF below.
7. What Happens If You Get Caught After January 31, 2026
Don’t risk it—braced pistols aren’t SBRs right now, but always verify your build meets traditional NFA criteria (e.g., <16″ barrel + stock) at ATF.gov. State laws (e.g., bans in CA/NY) may still apply.
* Federal brace rule vacated 2025—no SBR reclassification, but NFA penalties apply to true unregistered SBRs.
Get the 2026 Pistol-Brace 6 Page Compliance Guide – Plus One Page Cheat Sheet FREE
• State-by-state color directory
• All 9 legal configurations with exact specs
• Grandfathering dates & Form 1 checklist
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Final Word
The sky is not falling. Thousands of braced pistols remain 100% legal in 2026 if you stay under the new thresholds or register before January 31. Download the free cheat sheet above, check your builds, and sleep easy.
Stay armed, stay legal. — The GunStuff Team
Have questions? Drop them in the comments — we answer every single one.