Incendiary ammo is legal to own under federal law in most cases, but three separate layers decide whether it’s legal for you: the National Firearms Act’s quarter-ounce threshold, your state’s own ammunition laws, and the rules of the place you actually want to shoot. Clear all three and you’re fine. Miss one and the round in your hand can be a felony.
The Federal Quarter-Ounce Line
The National Firearms Act classifies a round as a “destructive device” only if it contains more than one-quarter ounce of incendiary material. The statute defines a destructive device to include any missile with an incendiary charge exceeding that weight.1Office of the Law Revision Counsel. 26 USC 5845 Definitions
Most small-caliber incendiary rifle rounds sit below that line. A typical .30-06 M1 incendiary round carries only a few grams of incendiary mixture in the bullet tip, well under the roughly seven-gram cutoff. Those rounds are not destructive devices, do not require federal registration, and can be owned without ATF paperwork under federal law.
Larger ordnance is different. Rounds built for grenade launchers, anti-materiel weapons, or heavy platforms can easily exceed the quarter-ounce limit. Any round that crosses it becomes an NFA item. Each individual cartridge must be registered in the National Firearms Registration and Transfer Record, and each transfer carries a $200 tax.2Office of the Law Revision Counsel. 26 USC 5811 Transfer Tax Possessing an unregistered round that meets the destructive device definition is a federal felony.3Office of the Law Revision Counsel. 26 USC 5861 Prohibited Acts
Legally acquiring an NFA-classified incendiary round means submitting ATF Form 4, paying the $200 tax per item, passing a background check, and waiting for approval before you take possession. The costs compound quickly if you’re buying more than one.
The Armor-Piercing Incendiary Trap
The Gun Control Act adds a separate restriction that can catch incendiary rounds built with a hardened penetrator core. Federal law prohibits manufacturing or importing armor-piercing ammunition for civilian sale and bars licensed dealers from selling it to the public.4Office of the Law Revision Counsel. 18 USC 922 Unlawful Acts
A round qualifies as armor-piercing if its core is made entirely of hard metals like tungsten, steel, iron, brass, bronze, beryllium copper, or depleted uranium, and it can be used in a handgun. The definition also covers full-jacketed projectiles larger than .22 caliber designed for handgun use whose jacket exceeds 25 percent of the projectile’s weight.5Legal Information Institute. 18 USC 921(a)(17) Definition of Armor Piercing Ammunition
“Usable in a handgun” is the pivot. Military-surplus .30-06 armor-piercing incendiary rounds have a hardened steel core that would otherwise meet the definition, but because no commonly manufactured multi-shot handgun chambers .30-06, those rounds have historically been treated as exempt. A combined armor-piercing incendiary round in a caliber that does fit a commercially available handgun falls squarely inside the ban. A pure incendiary round with no hardened core doesn’t trigger this rule at all.
States That Ban or Restrict Incendiary Ammo
State laws create the sharpest limits on ownership, and they don’t match each other. At least five states explicitly restrict or prohibit incendiary ammunition: California, Connecticut, Maryland, Massachusetts, and Utah. The scope of each ban is different. Some prohibit possession, manufacture, and sale outright. Others reach only sale or transfer. Connecticut’s ban is limited to incendiary rounds in .50 caliber. Utah allows exceptions with permission from its forestry division.
Two states target specific products rather than the whole category. Illinois bans dragon’s breath shotgun shells along with bolo and flechette shells, but doesn’t broadly outlaw incendiary rifle rounds. Florida classifies dragon’s breath shells as destructive devices, which makes their sale or knowing possession a felony.
Many states have no statute using the word “incendiary” at all, and yet still capture these rounds under broader destructive device or dangerous weapon laws. Check your state’s criminal code before buying. State laws change, and the list above is not exhaustive.
Where You Can Actually Shoot Them
Even where ownership is clean, finding a lawful place to fire an incendiary round is the harder problem. These rounds start fires. That single fact drives almost every use restriction.
National Forest and BLM Land
Federal regulations permanently prohibit firing any tracer or incendiary ammunition on National Forest land. There is no seasonal exception.6eCFR. 36 CFR 261.5 Fire The Bureau of Land Management imposes the same restriction on its public lands, with fire prevention orders consistently stating that tracer and incendiary ammunition is “always prohibited” regardless of season or fire conditions.
Shooting Ranges
Nearly every public and private range bans incendiary and tracer rounds in its safety rules. The fire risk to berms, backstops, and neighboring property is more than any operator will accept. Firing incendiaries at a range that prohibits them usually results in immediate removal and a permanent ban.
Hunting
No state game commission endorses incendiary rounds for hunting, and many explicitly prohibit them in their hunting regulations. State wildlife rules are written for clean, humane harvests, and incendiaries don’t meet that standard.
Private Land
Private property with adequate space and fire mitigation is the most realistic option, but local rules still apply. Many counties and municipalities ban discharging any ammunition that could start a fire, especially in wildfire-prone regions. Local fire authorities also impose seasonal burn restrictions that can effectively prohibit incendiaries even where no ammunition-specific law exists. Read your county and local fire codes before shooting.
Crossing State Lines and Shipping
If your incendiary rounds qualify as NFA destructive devices, federal law prohibits transporting them across state lines without prior written authorization from the ATF.4Office of the Law Revision Counsel. 18 USC 922 Unlawful Acts You submit ATF Form 5320.20 and wait for approval before crossing the state boundary.7Bureau of Alcohol, Tobacco, Firearms and Explosives. Application to Transport Interstate or to Temporarily Export Certain NFA Firearms Rounds under the NFA threshold don’t need this authorization, though you’re still bound by the laws of any state you enter.
Shipping is more restricted than for ordinary ammunition. The U.S. Postal Service prohibits mailing all live ammunition, incendiary rounds included.8United States Postal Inspection Service. Prohibited, Restricted, and Non-Mailable Items Private carriers ship standard ammunition under their hazmat policies, but incendiary rounds face additional hurdles. The Department of Transportation classifies ammunition containing incendiary substances in a higher hazard compatibility group than standard small arms ammunition, with stricter packaging and labeling.9eCFR. 49 CFR Part 173 Subpart C – Definitions, Classification and Packaging for Class 1 Standard small arms cartridges without incendiary projectiles can ship as lower-hazard Division 1.4S explosives; incendiary rounds don’t qualify for that reduced classification.
What Violations Cost
Possessing an unregistered destructive device, which includes any incendiary round over the quarter-ounce threshold, carries a maximum federal penalty of 10 years in prison, a fine of up to $10,000, or both.10Office of the Law Revision Counsel. 26 USC 5871 Penalties Transporting an unregistered NFA item across state lines without ATF authorization is a separate federal offense with the same maximum.
State penalties vary. In states that classify incendiary rounds or dragon’s breath shells as destructive devices, mere possession can be a felony. Other states treat possession as a misdemeanor but escalate if the ammunition is used during another crime. Even states with no incendiary-specific law can prosecute under arson, reckless endangerment, or general destructive device statutes when a round causes a fire or an injury.
Firing incendiary rounds on National Forest or BLM land in violation of fire regulations can bring fines and criminal charges under federal land management statutes. If the discharge starts a wildfire, suppression cost liability can reach millions of dollars on top of any criminal case.