Your gas choice affects more than just how hard your gun kicks, it changes cold-weather reliability, maintenance needs, and how much your internals wear over time. We carry airsoft green gas and CO2 for gas blowback pistols and rifles.
CO2 uses standard 12-gram metal cartridges to deliver high-pressure propulsion, generating stronger recoil and often exceeding 350 FPS, higher muzzle velocity than most green gas setups produce. That extra power comes with a real tradeoff: CO2's higher operating pressure puts more stress on internal seals and components, meaning more frequent maintenance than a green gas system typically needs.
CO2 performs meaningfully better in cold weather than green gas, which tends to lose pressure or fail below roughly 50°F to 65°F. If you play regularly in cold conditions, CO2 is the more reliable choice for consistent performance across a full game day.
A partially used CO2 cartridge can't be topped up. Once you insert one, you either use the whole canister or vent the remaining gas when removing it, unlike green gas, which can be refilled incrementally from a shared can.
Check your local field's rules before running a high-output CO2 setup. Some indoor or strict fields restrict or ban CO2 specifically because of the higher FPS it can produce compared to standard green gas.
Always remove an empty or spent CO2 cartridge from the magazine or grip before storing your gun, since leaving it in place stresses the gaskets and can cause permanent deformation and leaks over time. Periodically add a drop of silicone oil to new cartridges or seal areas to keep rubber O-rings soft and airtight, on both CO2 and green gas systems.
A few details determine which propellant fits your platform and playing conditions.
Confirm CO2's higher FPS output doesn't exceed your field's limit before committing to it as your primary propellant.
Choose CO2 if you regularly play in cold weather, since green gas loses reliability well before CO2 does in the same conditions.
CO2's higher pressure means more frequent seal maintenance. Factor that ongoing upkeep into your choice alongside the upfront propellant cost.
Yes, CO2 typically produces higher muzzle velocity and stronger recoil, often exceeding 350 FPS, compared to most green gas setups.
Yes. Green gas tends to lose pressure or fail below roughly 50°F to 65°F, while CO2 performs much more reliably in cold conditions.
No. Once inserted, you either use the full cartridge or vent the remaining gas when removing it.
Leaving a spent cartridge in place stresses the gaskets and can cause permanent deformation and gas leaks over time.
Not always. Some indoor or strict fields restrict or ban CO2 due to its higher potential FPS output. Check your field's rules first.
For all your airsoft or airgun gas blow back pistols and rifles, you will need gas to propel the bb or pellet. Green gas is the preferred gas of choice as it is less harmful to your pistols internal components. For colder weather climates, CO2 is the preferred gas, as it it does not leak in colder climates under 32 degrees F
MiR Tactical only carries high quality Co2 and Green gas at the lowest prices!
