Airsoft Gases: What you need to know

What is Green Gas and what is it made of?  

Green Gas is a product designed for use in airsoft gas replicas. It is a very popular and now more common alternative to CO2 cartridges. It consists of approximately 90% propane, 8-10% butane and potential silicone additives to help lubricate the internal components of the replica.
Within our range you can only find selected proven gas brands such as Protech Gas, Nuprol  or ASG that supply high quality clean gas that will not compromise the functionality of your replica.

Not all Green Gas is the same

Green Gas generally stays at similar levels in terms of the amount of lubricant in the gas, but in addition to the gold standard on the airsoft market, there are alternatives suitable for more specific uses. 
A good example is Ultrair gas, which is completely lubricant free and is popular among long GBBR gun users for this feature. In long term use, greater care must be taken to keep the gun lubricated on the moving parts of the gun. On the other hand, the absence of silicone makes the guns more accurate (more consistent) when using this gas. Unlike other gases, Ultrair does not inadvertently lubricate the hop-up rubber during firing, which would reduce its effectiveness, accuracy and stability. 

The other side are the gases, which contain a large amount of added silicone that heavily lubricates the guns, causing, in addition to inconsistent hop-up, a more rapid fouling of the gun's interior due to dust and dirt that adheres to the oil-covered parts. This dirt then directly contributes to the reduced accuracy of the gun and increases the risk of damage to the internal parts. 
However, we do not want to discourage the use of the classic Green Gas with added silicone. We just need to point out that too much of anything is harmful. A great gas with a reasonable amount of silicone is ProTech Gas., for example. However, if you choose to use dry gases, it is recommended that you periodically lubricate the seals in the magazine or on the gun with silicone oil. 

Effect of temperature on performance and gas types 

Different types of gases are suitable for each season and the associated temperatures, which we will now introduce.

• 144a Gas

The weakest gas of the whole selection designed mainly for Tokyo Marui replicas. It is very gentle and suitable for plastic gas replicas. It is also a suitable alternative for reducing the power to bring the performance of your gun within the limits of your airsoft field.

• Green Gas

Green Gas is the main evergreen among airsoft gases. It offers you a balanced performance and is suitable for use most of the year. This type of gas is recommended for almost every airsoft pistol and rifle.
Some players like to use pure Propane instead of Green Gas. However, we recommend using gases designed specifically for airsoft guns. Compared to UltraAir gas, the working pressure is identical at the same temperatures, but industrial Propane may contain coarse impurities that can cause poor hop-up or poor gasket function in the magazines. 

• Orange Gas

Orange Gas is a stronger version of the aforementioned Green Gas. It could be considered as a kind of intermediate between Green and Red Gas. The gas is stronger and offers the same working pressure at 15°C as Green Gas at 25°C. It is therefore the ideal choice for spring and autumn.

• Red Gas

Red Gas is a very strong gas suitable for long sniper rifles, long GBBR guns and pistols at very low temperatures. Please note that using it at higher temperatures puts your weapon at high risk of damage and we therefore recommend that you only use this gas at low temperatures. At 10°C this gas has the same working pressure as Green Gas at 25°C. Furthermore, we do not recommend using this gas on guns with plastic parts, which may crack due to the high pressure.

• Black Gas

Black Gas is the strongest the airsoft gas market has to offer. Most of the gases sold exceed 200 PSI at 20°C and are therefore suitable for use at temperatures around zero. Again, it is not recommended to use this gas on guns with plastic parts that may crack due to the high pressure. 

How to fill magazines properly? 

Gas magazines are essentially filled upside-down (i.e. bottle on top, container on the bottom), since in practice we are transferring gas in liquid form using gravity. To do otherwise would only fill the container with the expansion gas contained in the gas cylinder, which would not give us the power we need.
When filling an empty magazine, we recommend holding the release valve for about 1-2 seconds during filling. This way you will get all the excess air out of the tank and be sure you have filled it with gas to the maximum.
This does not apply to Tokio Marui type valves, which are two-phase and can vent excess air and gas when filling. 

Storing Gas Bottles

When handling gas canisters, it is important to bear in mind that they are still a pressurised flammable liquid and must be handled responsibly. Care should be taken not to leave canisters lying unnecessarily in direct sunlight and to avoid open flames.
When the gas has been used up, drain the excess expansion gas from the bottle and dispose of it in hazardous waste.