Configuration Compliance
Build Legality Scanner
Enter your firearm's full configuration — barrel, stock, features, magazine capacity, suppressor — and get a state-specific red/yellow/green output across every relevant legal dimension.
2026 Updated
Legal — No Issues
Restricted — Verify
Likely Illegal — Action Required
✓ 2026: $0 NFA tax stamp effective Jan 1, 2026. Pistol brace rule (2021R-08F) vacated July 17, 2025 — braced pistols are not automatically SBRs. Form 1/Form 4 still required before possession of any NFA item.
Build Configuration Scanner — All 50 States + DC
Select state...
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Select type...
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Rifle / Rifle Receiver
Pistol / Pistol Receiver
Shotgun
Bolt face to muzzle. Pinned/welded muzzle devices count. Removable ones don't.
Stock or brace fully extended. Folding stocks measured unfolded.
Select rear...
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Fixed shoulder stock
Adjustable / folding stock
Pistol stabilizing brace
No stock or brace
Highest-capacity magazine you intend to use with this firearm.
Pistol grip / thumbhole stock
Flash hider / suppressor-ready muzzle
Vertical foregrip (pistol)
Grenade / flare launcher mount
Bayonet lug
Detachable magazine (semi-auto rifle)
Yes — I have or plan to use a suppressor
No suppressor
Scan Results —
Federal Classification
What This Means
State Law —
Status Badges
Quick Reference
Federal NFA Thresholds
- Title I Rifle: Barrel ≥16" AND OAL ≥26" with stock — no NFA
- SBR: Rifle barrel <16" OR OAL <26" with stock
- SBS: Shotgun barrel <18" OR OAL <26" with stock
- Pistol: No stock, designed for one-hand use
- AOW: Pistol + vertical foregrip added
AWB Feature Bans
States restricting semi-auto rifles by features: CA, NY, NJ, MD, MA, CT, HI, IL, CO, WA, RI, DE, DC. Each state's banned feature list differs. Common banned features: pistol grip, adjustable stock, flash hider, detachable magazine on certain platforms. Verify your state's exact statute.
Magazine Limits
- 10 rounds: CA, CO, CT, HI, MD, MA, NJ, NY, RI, DC
- 15 rounds: IL, VT, WA
- 17 rounds: DE
- All other states: No federal or state limit
Suppressor Bans
Banned: CA, HI, IL, MD, MA, NJ, NY, RI, DC.
Restricted (additional state steps): CT, MN, PA.
Legal with federal Form 4 in all other states.
$0 tax stamp effective Jan 1, 2026. Form 4 still required.
Restricted (additional state steps): CT, MN, PA.
Legal with federal Form 4 in all other states.
$0 tax stamp effective Jan 1, 2026. Form 4 still required.
Brace Rule — 2026
ATF brace rule (2021R-08F) vacated July 17, 2025 in Mock v. Bondi. Braced pistols revert to statutory definition — a firearm is only an SBR if barrel <16" OR OAL <26" AND designed to fire from the shoulder. A brace is not a stock under current enforcement.
14.5" Pinned Muzzle Device
A 14.5" barrel with a permanently pinned/welded muzzle device bringing total barrel length to ≥16" counts as a legal 16"+ barrel — no NFA required. The weld must be professional and inspected — device cannot be removable. Common legal workaround. Cost: ~$50–100 at most gunsmiths.
For general informational purposes only — not legal advice. Firearm laws change frequently. Always verify with ATF, your state's official statutes, and a licensed firearms attorney before modifications or purchases. Data reviewed March 2026. © HexCore Mounts
