Can a CO2 Airsoft Gun Use Green Gas? Debunking Myths and Revealing Facts

When it comes to airsoft guns, you might wonder if a CO2 airsoft gun can use green gas as an alternative power source. As an expert in airsoft, it’s essential to clarify the differences between these two gas types and understand the compatibility with various airsoft guns.

CO2 and green gas, while used to power airsoft guns, have distinct characteristics. For example, CO2 is typically stored in 12g cartridges and provides higher pressure, while green gas is propane-based and comes in larger cans.

Knowing the fundamental differences between these two gases can help you decide whether your CO2 airsoft gun is compatible with green gas.

To directly answer the question, in most cases, CO2 airsoft guns cannot use green gas without proper modifications. This limitation is because the internal components of CO2 airsoft guns are designed specifically for the higher pressure of CO2.

Attempting to use green gas without the necessary modifications could lead to reduced performance or potential damage to your airsoft gun.

CO2 and Green Gas in Airsoft

In this section, we’ll discuss the differences between CO2 and green gas in airsoft guns and help you understand whether a CO2 airsoft gun can use green gas.

We will cover Understanding CO2 and Understanding Green Gas as sub-sections.

Understanding CO2

CO2, or carbon dioxide, is a compressed gas in small, disposable cartridges. When used in airsoft guns, CO2 provides consistent pressure and high power, allowing for a faster muzzle velocity.

This makes CO2-powered airsoft guns popular for outdoor play and long-range shooting scenarios.

However, the high pressure of CO2 can cause increased wear on internal parts and may not be compatible with some airsoft guns designed specifically for use with green gas.

Make sure to check your gun’s compatibility before attempting to use CO2.

Understanding Green Gas

Green gas, on the contrary, is a mixture of propane and silicone oil. It’s a lower-pressure gas than CO2, making it ideal for airsoft guns with plastic or delicate internal components. Green gas-powered airsoft guns typically have a lower muzzle velocity. They are better suited for indoor play or situations requiring a lower FPS (feet per second).

  • Compatibility: Airsoft guns designed for green gas may not be able to handle the higher pressure of CO2.
  • Performance: CO2 offers higher FPS and overall power, while green gas provides a more gentle and realistic shooting experience.

A CO2 airsoft gun cannot naturally use green gas without the risk of damaging the gun or reducing performance. Thus, using the appropriate gas for your specific airsoft gun is vital to ensure its longevity and optimal performance.

Always consult the manufacturer’s guidelines before making any modifications.

Compatibility and Differences

Understanding the compatibility and differences between CO2 and green gas airsoft guns is essential to make an informed decision when choosing a gun to suit your needs.

CO2 Airsoft Guns

CO2 airsoft guns utilize 12-gram CO2 cartridges as a power source, providing higher velocity and a more consistent shooting experience than green gas-powered guns in some cases. The CO2 cartridges are widely available and can be quickly replaced.


However, using green gas as an alternative in a CO2 airsoft gun is not recommended. The two power sources have different internal components, and replacing one with the other might cause damage to your airsoft gun.

Green Gas Airsoft Guns

Green gas airsoft guns use a propane-based gas mixed with silicone oil, known as green gas, which is stored in the airsoft gun’s magazine. Green gas produces a more realistic shooting experience due to its blowback function and is more environmentally friendly.

Although CO2 boasts higher power compatibility in some cases, using CO2 cartridges in a green gas airsoft gun is not advised. Doing so might not only damage your gun’s internals, but it could also lead to performance issues and negatively affect your airsoft experience.

Using the appropriate power source for your airsoft gun is crucial to ensure optimal performance and avoid potential damage.

Performance and Efficiency

Let’s dive into CO2 airsoft guns and how they perform using green gas. We’ll investigate how using a different propellant affects both power and efficiency.

Power and FPS

When it comes to power, measured in feet per second (FPS), CO2 airsoft guns typically provide higher FPS than green gas-powered guns. This is because CO2 generally operates at a higher pressure, averaging around 850 psi, compared to green gas, which usually sits at around 100-130 psi.

This pressure difference ultimately results in a higher FPS output for CO2 airsoft guns.

Pressure and Temperature

Pressure and temperature play a vital role in the performance of these guns. Green gas and CO2 exhibit a direct relationship between pressure and temperature, meaning as one rises, so does the other.

However, CO2’s higher pressure produces more significant temperature effects on your gun.

For example, when using green gas, an increase in temperature usually leads to a moderate increase in FPS. On the contrary, using CO2 can cause more considerable FPS swings depending on temperature variations.

This can affect both gun performance and efficiency and the wear and tear on your airsoft gun’s internals.

CO2 airsoft guns can use green gas, but the propellant change leads to performance and efficiency alterations. Before making the switch, you’ll want to consider the implications for your airsoft gun’s FPS and functionality in different pressure and temperature conditions.

Advantages and Disadvantages

Advantages of CO2

CO2 airsoft guns offer higher power and longer-lasting performance in colder climates. With CO2, you can expect a more consistent shooting experience, as the gas pressure remains stable throughout its use.

Additionally, CO2 cartridges are widely available and easy to replace.

Disadvantages of CO2

CO2 can be more expensive in the long run, as the cartridges must be replaced frequently. The increased power of CO2 airsoft guns may lead to higher wear and tear on internal components.

Also, some airsoft fields may have limitations on CO2-powered guns due to their higher FPS.

Advantages of Green Gas

Green gas airsoft guns offer a more environmentally friendly and cost-effective alternative to CO2. Green gas is usually based on propane, which is cheaper and easier to refill than CO2. In terms of performance, green gas guns provide a more realistic shooting experience with their blowback functionality.

Disadvantages of Green Gas

Green gas guns might be less suitable for colder environments, as their performance can suffer from lower temperatures. The blowback functionality of green gas guns can also consume more gas per shot, resulting in a shorter overall gas capacity.

Moreover, green gas canisters might not be as readily available as CO2 cartridges.

Maintenance and Longevity

In this section, we will discuss the importance of maintenance and factors that affect the longevity of your CO2 airsoft gun when using green gas.

Lubrication and Care

Proper lubrication is crucial in preserving the performance and condition of your airsoft gun. Using silicone oil is recommended, as it is designed to protect the seals and prolong the life of your weapon.

  • Apply silicone oil to the magazine’s fill valve every few months to prevent O-ring wear.
  • Clean and lubricate the moving parts of your gun regularly to reduce friction and maintain smooth operation.

Wear and Tear

It’s essential to understand that using green gas in a CO2 airsoft gun can cause more wear and tear than using its intended gas.

AspectCO2Green Gas
PressureHigher pressure, more wear on internal partsLower pressure, less internal wear, and tear
CompatibilityDesigned for the gunIt may not be compatible with all CO2 airsoft guns

Remember that using green gas in a gun designed for CO2 may void your warranty, and you are responsible for any additional maintenance required to keep your gun functioning properly.

Cost and Budget Considerations

When comparing CO2 airsoft guns and green gas guns, it’s essential to consider the costs involved in the initial purchase and ongoing operation.

In this section, we’ll take a closer look at these costs.

Initial Cost

CO2 airsoft guns tend to have a lower initial cost than green gas guns. You can often find quality CO2 airsoft pistols in the cheaper price range, making them an appealing option when you’re on a tight budget.

Green gas guns, on the contrary, are typically more expensive due to the materials and technology used in their construction. This higher initial cost can be a barrier for some players.

Operating Cost

While CO2 airsoft guns may have a lower initial cost, operating costs can be higher. CO2 cartridges are typically more expensive than green gas and must be replaced more frequently.

In addition, CO2 guns tend to use more gas per shot, which can increase your overall cost per shot.

Green gas guns are generally more cost-effective in the long run, as green gas is cheaper than CO2 and generates fewer costs over time. However, temperature sensitivity and the need for regular maintenance can add to the overall operating costs.

  • CO2: higher operating cost, more frequent cartridge replacement
  • Green Gas: lower operating cost, but may require more maintenance

Ultimately, weighing these cost factors against your specific airsoft needs and budget is essential to make an informed decision.

Magazines and Loading

When choosing between CO2 and green gas magazines, it’s essential to understand their differences and compatibility with your airsoft gun.

CO2 Magazines

CO2 magazines use 12g CO2 cartridges as their power source, providing a consistent and robust FPS. These magazines are most compatible with CO2 airsoft guns and typically offer the following:


Green Gas Magazines

Green Gas magazines use a mix of propane and silicone oil, catering to airsoft guns specifically designed for this type of power source. Benefits of using green gas magazines include:

  • Easier maintenance: The silicone oil in green gas keeps your gun lubricated during use.
  • Quieter operation: Green gas operates at a lower pressure than CO2, making it less noisy.

Unfortunately, you cannot use green gas magazines in a CO2 airsoft gun, as their designs and internal mechanisms differ. Mixing or modifying these components can damage your airsoft gun or reduce performance.

Always carry multiple magazines for the most efficient gameplay, regardless of whether you are using CO2 or green gas. This lets you quickly and easily top off, ensuring you stay in the game without hassle or delay.

Availability and Popularity

When it comes to CO2 airsoft guns, you’ll find that they are widely available and popular among airsoft players. Many airsoft retailers, like RedWolf Airsoft, offer a diverse range of CO2-powered guns to cater to various preferences and budgets.

However, it’s essential to understand that not all CO2 airsoft guns can use green gas. Green gas is commonly used in gas blowback (GBB) pistols, which have a different internal mechanism than CO2 guns.

While some exceptions allow for the use of green gas, they are not as expected.

As you browse airsoft retailers, pay attention to the following when looking for a CO2 airsoft gun compatible with green gas:

  • Look for dual-fuel guns with both CO2 and green gas options.
  • Check the product pages for mention of green gas compatibility.
  • Consult online forums and airsoft communities for advice on specific models.


In determining if a CO2 airsoft gun can use green gas, it’s essential to consider the compatibility factor. With distinct pressure levels, CO2 and green gas are not interchangeable in airsoft guns explicitly designed for one or the other.

While CO2 provides higher power and is suitable for colder climates, green gas offers a more eco-friendly option and smoother performance. Refitting your airsoft gun to accept a different gas type can lead to permanent damage and may also void the warranty.

Always consult the manufacturer’s guidelines and stick to the recommended power source for your airsoft gun. This ensures a safe, optimal, and enjoyable experience on the airsoft field.

Frequently Asked Questions

Q. Can a CO2 airsoft gun use green gas?

No, you cannot use green gas in a CO2 airsoft gun. CO2 guns are specifically designed for CO2 cartridges, and using green gas can damage the internal components and void any warranties on your gun.

Q. Can I use compressed air instead of green gas or CO2?

Some airsoft guns are designed to use compressed air, also known as High-Pressure Air (HPA). If your gun supports HPA, you can use compressed air.

However, using compressed air in a green gas or CO2 gun is not recommended as it can also cause damage.

Q. What’s the difference between blowback and non-blowback airsoft guns?

The blowback and non-blowback varieties offer different benefits and drawbacks. Blowback airsoft guns provide a more realistic shooting experience by simulating real firearms’ recoil and slide movement.

However, this can come at the cost of gas efficiency and decreased overall performance.

Non-blowback airsoft guns, on the contrary, do not have slide movement or recoil, resulting in greater gas efficiency and less wear on internal components. However, they may not provide the same level of realism as their blowback counterparts.

Leave a Comment

Your email address will not be published. Required fields are marked *