4.5mm Airgun FAQ
4.5mm Airgun FAQ – CO2 Pistols, Power & Safety
Answers about 4.5mm CO2 airgun pistols, power levels, targets, and safety. For target shooting, not airsoft.
What is the difference between airsoft and airguns?
Airsoft guns shoot 6mm plastic BBs at low power for safe skirmishing against people. Airguns shoot 4.5mm metal projectiles (steel BBs or pellets) at much higher power for target shooting and pest control only — never for skirmishing. They are completely different categories with different safety requirements.
Can I use airsoft BBs in a 4.5mm airgun?
No. 4.5mm airguns require 4.5mm (.177 caliber) steel BBs or pellets. 6mm airsoft BBs are too large and will jam or damage the gun. Always use the correct ammunition for your gun type.
Are 4.5mm airguns legal to own?
In most US states, 4.5mm airguns are legal for adults without special licensing, as they are not classified as firearms under federal law. However, some cities and states have restrictions. Check local regulations. They should never be used in airsoft games.
How powerful are 4.5mm CO2 airgun pistols?
Typical 4.5mm CO2 pistols shoot 350–450 FPS with steel BBs, generating significantly more energy than airsoft guns. This power level can cause serious injury — they are for targets only, never for shooting at people or animals (except legal pest control where permitted).
What targets are safe for 4.5mm airgun shooting?
Use proper pellet traps, thick cardboard, or commercial airgun targets with a safe backstop. Never shoot at hard surfaces that cause ricochets (concrete, metal). Always have a backstop that captures projectiles. Shoot only in areas where it's legal and safe.
Can 4.5mm steel BBs be reused?
No. Steel BBs deform on impact and can develop flat spots or burrs. Reusing them damages barrels and reduces accuracy. They're inexpensive — always use fresh BBs.
How do I maintain a 4.5mm CO2 airgun?
Keep the barrel clean (steel BBs leave more residue than plastic), apply a drop of Pellgun oil on the CO2 cartridge tip before insertion to condition seals, and store with the CO2 removed. Check seals annually.
What is the effective range of a 4.5mm airgun pistol?
Accurate to approximately 10–20 meters for target shooting. Beyond this, groups open significantly. They're designed for close-range target practice, not long-distance shooting.
Are 4.5mm airguns suitable for beginners?
For target shooting beginners, yes — they're simple to operate and affordable to shoot. However, they demand strict safety discipline due to their power. First-time shooters should learn safety rules thoroughly and ideally shoot under supervision initially.
What is the difference between steel BBs and lead pellets for 4.5mm?
Steel BBs are round, inexpensive, and good for plinking. Lead pellets (wadcutter, domed, pointed) are more accurate due to their aerodynamic shape and are preferred for precision target shooting. Some airgun barrels are rifled and shoot pellets more accurately than BBs.
Can I use a 4.5mm airgun for pest control?
In many jurisdictions, 4.5mm airguns are legal for small pest control (check local laws). Ensure sufficient power for humane dispatch and always follow local regulations regarding discharge of airguns. Airgrix does not provide legal advice — verify with local authorities.
How many shots per CO2 cartridge in a 4.5mm airgun?
Similar to airsoft CO2: 50–80 shots per 12g cartridge depending on temperature and gun efficiency. Higher-power airguns may get fewer shots per cartridge than airsoft equivalents.
What safety gear do I need for 4.5mm airgun shooting?
Safety glasses (ANSI rated) are mandatory — steel BBs can ricochet. Shoot only at proper targets with adequate backstops. Never point at people, pets, or anything you don't intend to shoot. Treat with the same respect as a firearm.
Why does my 4.5mm airgun have low accuracy?
Common causes: low-quality BBs (use precision steel BBs), dirty barrel (clean regularly — steel leaves more fouling), loose sights, or inconsistent CO2 pressure. For best accuracy, use pellets instead of BBs if your barrel is rifled.
