You do not need a federal air gun permit to buy or own one in the United States. Federal law doesn’t treat air guns as firearms, so the ATF’s licensing and background-check system doesn’t apply. A small number of states, however, define certain air guns as firearms under their own laws, and those states impose the same permit requirements you’d face for a conventional handgun or rifle. Cities and counties can add another layer on top. Whether you need a permit comes down to your state, your city, and sometimes the caliber and muzzle velocity of the gun itself.
Why Federal Law Doesn’t Require a Permit
The Gun Control Act defines a firearm as a weapon “designed to or may readily be converted to expel a projectile by the action of an explosive.”1Office of the Law Revision Counsel. 18 USC 921 – Definitions Air guns use compressed air, CO2 cartridges, or spring-driven pistons. No explosive charge, no federal firearm. That means no federal background check, no federal registration, and no federal permit to buy or possess one.
The exemption covers BB guns, pellet rifles, CO2 pistols, and airsoft guns. There is one exception. An air gun built on the frame or receiver of an actual firearm is still a firearm to the ATF regardless of how it launches a projectile.
One point of common confusion: federal law does not set a minimum age to buy an air gun. The 18-year minimum for long guns and the 21-year minimum for handguns in the Gun Control Act apply to firearms sold by licensed dealers. Since air guns are not firearms under that statute, neither age floor applies federally. Many retailers won’t sell to buyers under 18 as a matter of policy, and states have filled the gap with their own rules, but nothing in federal law requires it.
States That Treat Air Guns as Firearms
A handful of states classify certain air guns as firearms under state law. In those states, the same permit, background check, and registration rules that apply to a conventional handgun or rifle apply to your pellet pistol or BB gun. Buying one without the required permit is the same offense as buying a conventional gun illegally.
Some states draw the line by caliber, muzzle velocity, or both. An air gun above a set speed or caliber crosses into firearm territory, while a lower-powered model of the same type does not. The thresholds are not uniform. One state might use .177 caliber and 500 feet per second as its cutoff; another might use different numbers or impose no threshold at all. Pending legislation in some states would narrow these classifications, but until a bill becomes law, the current rules control.
Other states don’t formally define air guns as firearms but have created a separate licensing scheme, which may require an air gun permit, a background check, or a safety course. The majority of states impose no statewide permit for air gun ownership. When you’re not sure which category your state falls into, the state wildlife agency or attorney general’s office can usually tell you.
City and County Rules on Top of State Law
Even in states with no statewide permit, local governments frequently add restrictions. Common ordinances include:
- Bans on discharging an air gun anywhere within city limits, sometimes extending to private property.
- Restrictions on carrying air guns in parks, near schools, and in government buildings.
- Transport rules requiring the gun to be unloaded and stored in a locked case or trunk while in a vehicle.
- Local licenses required to possess an air gun, on top of any state rules.
Violating a local ordinance can bring fines or misdemeanor charges. Most municipal codes are searchable on the city or county’s official website.
There’s a complication. Some states have preemption laws that block cities and counties from regulating air guns at all. In those states, the legislature has reserved the field for itself. Other states leave local governments free to regulate, which is why a perfectly legal air gun in one town may require a local permit a few miles away. Courts in at least one state have held that the state’s preemption of firearms regulation extends to air guns. Check whether your state preempts local air gun rules before assuming your city’s ordinance applies.
Age Requirements for Buyers
With no federal age minimum, state law controls who can buy an air gun. Most states set 18 as the threshold for buying without parental involvement. Some allow minors as young as 12 or 14 to use an air gun under adult supervision.
In states that classify air guns as firearms, the state’s firearm purchase ages apply automatically. That usually means 18 for long guns and 21 for handgun-style air pistols. In states without specific air gun age laws, the retailer’s own policy often fills the gap, and a private sale between individuals may have no age restriction at all.
Where You Still Can’t Take an Air Gun
A permit or the lack of one doesn’t cover every situation. The federal Gun-Free School Zones Act uses the same firearm definition in 18 USC 921, so air guns are not covered by that federal prohibition. State and local school-zone laws often define weapons more broadly, and many school districts treat air guns the same as firearms for disciplinary and criminal purposes. Bringing a BB gun onto school grounds can lead to expulsion and criminal charges even where owning the gun is legal.
Federal buildings are another concern. The law prohibiting weapons in federal facilities bans firearms and “dangerous weapons,” defined as any device “used for, or readily capable of, causing death or serious bodily injury.”2Office of the Law Revision Counsel. 18 USC 930 – Possession of Firearms and Dangerous Weapons in Federal Facilities A powerful air rifle could fit that description. Leaving an air gun in the car before entering a federal courthouse or post office is the safer choice.
Orange Tip Rules for Airsoft
Separate from any permit question, federal law requires toy guns, airsoft guns, and other look-alike firearms to have a blaze orange plug permanently affixed to the muzzle.3Office of the Law Revision Counsel. 15 USC 5001 – Penalties for Entering Into Commerce of Imitation Firearms Removing an orange tip from a device that requires one is a federal violation.
Traditional BB guns, pellet guns, and paintball markers are explicitly exempt.4eCFR. 16 CFR Part 1272 – Marking of Toy, Look-Alike, and Imitation Firearms The regulation defines these as air guns that “expel a projectile through the force of compressed air, compressed gas or mechanical spring action.” Airsoft guns are not exempt. Because they fire nonmetallic projectiles and closely resemble real firearms, they fall under the marking rules and must be sold with the orange tip intact.5Consumer Product Safety Commission. Toy, Look-Alike, and Imitation Firearm Business Guidance Carrying an airsoft gun in public with the orange tip removed is the kind of thing that ends badly during a police encounter.
Hunting License Requirements
If you plan to hunt with an air gun, you’ll need a hunting license even where no ownership permit is required. Most states now allow air gun hunting, and roughly 40 states permit big-game hunting with an air gun. Each state’s wildlife agency sets the specifications, typically listing a minimum caliber, muzzle velocity, or muzzle energy for each type of game.
Small-game hunting often requires at least .177 caliber at 600 feet per second. Big-game standards run considerably higher, sometimes .30 caliber or larger with minimum muzzle energies around 215 foot-pounds. Some states have no caliber or energy rules at all; others provide detailed tables by species. Seasons, bag limits, and legal methods apply exactly as they would with a conventional firearm. The state wildlife agency’s website is the place to confirm what your air gun needs to meet before you hunt.