Airguns at Gun Shows: PCP, Springers, CO2 and the Rules That Still Apply

Airguns turn up at plenty of gun shows: a break-barrel pellet rifle in a tired box, a CO2 pistol that looks exactly like a service sidearm, a PCP with a carbon-fiber tank tucked under the table. They appeal to backyard shooters, pest control and cheap trigger time. Most are not firearms under federal law, which tempts buyers to treat them like toys. They are not toys, and the power plant, the fill equipment and your state's rules matter more than the price tag.

Four ways to push a pellet

Every airgun on the table belongs to one of four families, and the family decides what it needs and how it fails.

Spring-piston and gas-ram guns, usually called springers, store their energy when you cock them. Crosman describes a compression chamber holding a spring and a piston; the trigger releases the piston, which compresses the air that drives the pellet. Crosman calls springers generally more affordable than the alternatives. Gas-ram designs swap the coil spring for compressed gas: Crosman's Nitro Piston, which it says is quieter, vibrates less and can be left cocked without wearing out a spring, and Gamo's IGT, a pneumatic cylinder in place of the spring. Either way, a springer needs nothing but your arm.

CO2 guns run on disposable cartridges; Crosman's 12-gram Powerlets are the familiar example. There is no fill pressure to choose, because the gas sits at its vapor pressure for the temperature. NIST's data put carbon dioxide near 850 psi (absolute) at 70°F and under 570 psi at 40°F. Less pressure means less push, which is worth remembering before a November squirrel trip.

Multi-pump pneumatics are charged with a lever built into the gun. Crosman says they typically need at least three pumps to fire and up to 12 for a full-power shot.

Pre-charged pneumatics (PCPs) store high-pressure air in an onboard reservoir. Crosman says most need 2,000 to 4,500 psi, and Umarex USA lists its .22 Gauntlet at a 4,500 psi (310 bar) maximum. In Crosman's comparison, the PCP brings minimal recoil and a fixed barrel; the catch is a hand pump that takes "a large number of strokes," or a compressor.

Calibers: from paper punching to deer

Airgun calibers run from .177 up to big-bore sizes that start at .35 in Umarex USA's definition.

You will find airguns at sportsman expos as well as gun shows. Either way, match the caliber to the job before you fall for the gun.

Not a firearm to Washington. Maybe one to your state.

The Gun Control Act defines a firearm in 18 U.S.C. 921(a)(3) as a weapon that will, is designed to or may readily be converted to "expel a projectile by the action of an explosive," plus frames and receivers, silencers and destructive devices. A spring, a pump or a cartridge of CO2 is not an explosive, so most airguns sit outside that definition.

State and local law can pull them back in. New Jersey's firearm definition, at N.J.S.A. 2C:39-1(f), includes air guns and spring guns propelled by a spring, CO2 or compressed air that eject a projectile smaller than three-eighths of an inch "with sufficient force to injure a person." The state's Division of Fish and Wildlife hunter education material puts it plainly: "NJ firearm laws consider air guns as firearms," and a firearms purchaser ID card is required to buy one in the state.

New York City goes further. Administrative Code 10-131(b) makes it unlawful to sell, offer to sell or possess an air pistol, air rifle or similar instrument powered by a spring or air, with narrow exceptions for licensed sellers delivering outside the city, licensed amusement venues and authorized ranges. Manufacturers notice. Crosman's FAQ says local restrictions keep it from shipping to some buyers' doors.

Airguns can kill. Treat them that way.

The Consumer Product Safety Commission's "BB Guns Can Kill" says the agency has reports of about four deaths a year from BB guns or pellet rifles, that muzzle velocities above 350 feet per second increase the risk, and that children under 16 should not use high-velocity BB or pellet guns. A 1995 CDC report said about 30,000 people a year were treated in emergency departments for BB and pellet gun injuries, and warned that projectiles from many of these guns, especially those faster than 350 fps, "can cause tissue damage similar to that inflicted by powder-charged bullets fired from low-velocity conventional firearms." It also cited data attributing 63 percent of reported perforating eye injuries in recreational settings to air guns.

Gamo's safety rules read like any firearm manual: wear eye protection, never aim at a person or animal, loaded or not, avoid targets that can ricochet, and know what lies beyond the target. A pellet trap or a solid backstop is part of the kit. Our eye and hearing protection guide covers the glasses.

Then there is the look. 15 U.S.C. 5001 requires an approved marking, typically a blaze-orange barrel plug, on toy and look-alike guns, but excludes "traditional B-B, paint-ball, or pellet-firing air guns." A pellet or steel-BB replica of a service pistol can leave the show with no orange tip and no obvious difference from the real thing. Carry it cased, and never make anyone, least of all a police officer, guess.

The used springer: scopes, tuning and the warranty you won't get

A springer recoils in an unusual way. Crosman notes that in a break-barrel rifle the heavy spring driving the piston forward "results in movement of the rifle before the pellet leaves the barrel." That motion is hard on optics. Gamo's scope guide lists the ability to withstand "reverse recoil" first among the features it wants in a break-barrel scope, and Hawke, an optics maker with a line of airgun scopes, warns that "airguns can have a devastating effect on optics if the right products aren't used." A springer with a scope is two used purchases; our used scope guide covers the second one.

Then ask whether the gun has been tuned. The word covers anything from a careful rebuild to a hardware-store spring, and the seller may not know which. Gamo's warranty is limited to the original purchaser and excludes guns altered or repaired by anyone other than a certified Gamo technician, along with damage from misuse or tampering to parts such as mainsprings and seals. Price a used springer as a gun with no warranty and an unknown history. The rules in our used gun show buying guide apply here too.

Used PCP and CO2 guns: seals, gauges and the tank question

Gas guns live and die by their seals. Crosman's FAQ advises against leaving a CO2 cartridge in the gun "as it can ruin the seals," so ask whether one was. On a PCP, look at the onboard gauge: a reading that squares with when the seller says it was filled suggests it holds air, while an empty gauge proves nothing either way. Make sure the fill probe or adapter comes with it.

Fill tanks are where a bad buy becomes a safety problem. Umarex USA says carbon-fiber tanks have a 15-year total life and must be recertified every five years from manufacture, with the date on the label in a format like "11 @ 25," and it strongly recommends avoiding used tanks entirely. PHMSA's special permit DOT-SP 10945, revised in March 2026 for one maker's carbon-fiber, aluminum-lined cylinders, likewise requires requalification every five years and bars use 15 years after manufacture. Other permits can differ, so go by the tank's own markings. Under 49 CFR 180.205, a cylinder may not be filled and offered for transportation unless it has been requalified and marked as required, and one with a specified service life may not be refilled that way once that life has expired. Other cylinder types follow DOT's requalification table.

Hunting with an airgun is a state question

Hunting rules come from each state's wildlife agency. Virginia's Department of Wildlife Resources allows air guns of .35 caliber or larger for deer but not for bear or elk, and says all methods may be used for nuisance species, crow and small game. New Jersey's 2026-27 hunting digest allows air guns from .177 to .25 caliber with a muzzle velocity of at least 600 fps for cottontail rabbit, jackrabbits, hare, gray squirrel, opossum and raccoon, and allows .25-caliber air guns alone for daytime coyote and fox. Older state handouts list fewer options, so read the current digest.

Gamo's airgun hunting-law map links to each state's agency and says it straight: "It's up to YOU to know the laws in your state, county and city and to fully comply with them."

A table-side checklist for used airguns

1. Ask before handling, and don't cock, pump or charge anything on the show floor.
2. Identify the power plant and what feeds it.
3. Confirm the caliber on the gun itself, not just the box.
4. On a springer, ask whether it has been tuned or resprung, and by whom, and inspect any scope as a separate purchase.
5. On a CO2 gun, ask whether a cartridge was left in it during storage.
6. On a PCP, read the gauge, ask when it was last filled, and confirm the fill probe or adapter is included.
7. On any tank, find the manufacture date and the latest requalification mark. No valid hydrotest date means no sale.
8. Check your state and city rules before you pay, not after.

Buying new instead: what to look for online or at a dealer

Airgun specialty retailers, sporting goods stores, many gun shops and manufacturers' own web stores sell new airguns, and a new gun brings a warranty and a return window. Compare these:

• Power plant. Self-contained springer, convenient CO2 or low-recoil PCP. Budget for whatever feeds it.
• Caliber. Pick it for the job, and for pellet availability where you shop.
• Velocity versus energy. Headline velocities are often quoted with light pellets. Gamo, for one, quotes its IGT rifles at up to 1,300 fps "with .177 Cal. Alloy Ammunition." Heavier lead pellets leave slower, so look for velocity with a named pellet weight, and for energy in foot-pounds.
• Fill equipment for a PCP. Gamo's filling guide calls hand pumps comparatively inexpensive but says a fill can take several hundred pumps; tanks are fast but must be refilled at a dive shop; compressors are quick but loud, expensive and need regular filter maintenance. Price the gun and the fill method together.
• Noise. Crosman says spring guns can be louder than other types, and Gamo cautions that "'noise reduction' does not mean 'silence.'"
• Warranty. Gamo's runs one, three or five years depending on the model, is limited to the original purchaser and needs a receipt unless the gun is registered.
• Return policy and shipping. Ask how returns work for a gun that has been fired or filled, who pays return freight, and whether the seller ships to your ZIP code at all.

Shopping for someone else? Our gift guide for shooters sticks to gear that needs no transfer. If you would rather see airguns in person first, the gun show calendar lists upcoming shows by state.