In airsoft, Gas Blowback Guns (or GBBs as they are informally referred to) can occasionally experience an issue known as ‘gas cooldown’. This is especially common during winter time.
But what actually is it?
First things first, let’s take a quick science lesson.
Many of us look forward to relaxing with a cool beverage on the weekend and what better way maximise your drink’s refreshment than with one of mankind’s greatest inventions: the ice cube.
When an ice cube is placed in an environment with a temperature lower than its melting point, it will inevitably begin to melt. The hotter the climate, the quicker the ice will melt.
This is exactly the same principle which affects your airsoft gases and the magazines in which they are stored.
Gas pressure has a direct correlation to temperature and, as a result, it can be harder to achieve the same velocity (and accuracy) from your weapons during colder seasons.
Propellant airsoft gases are stored in a liquid form in order to save space due to the higher particle density attributed to this chemical state. However, to be used in the guns firing cycle, this liquid must eventually be reconverted into a gas.
This process is completed by taking heat from the surrounding environment which then facilitates the liquid-to-gas transformation. This is why GBBs work so well during the summer months: there is simply more heat available and, as such, the process can be completed more efficiently.
When there is insufficient heat available from the environment, the liquid gas will attempt to obtain heat from wherever it can: namely the body of the magazine itself.
Problems caused by gas cooldown:
Slower firing cycle
Less shots per magazine
Unusually Cold magazines
As you can see, the gas cooldown effect can be detrimental not only to the performance of your weapons but, also, to the strength of their construction too.
As the temperature of plastics, metals and rubbers decreases they become more brittle and this can lead to premature damage over time, especially if you regularly play in colder climates.
How can you stop gas cooldown affecting your airsoft guns?
Unfortunately, there’s no sure-fire way to completely eradicate the gas cooldown effect –it’s just physics.
However, there are a number of preventative measures you can take to keep your guns warmer and less susceptible to damage.
Using a higher-powered gas such as Abbey Vertex Gas will help to limit the effects of gas cooldown. These types of gases have a higher native pressure and, so, will be less affected by drops in temperature.
In addition, keeping magazines in a warm place such as your pocket or bag prior to each skirmish will help to maximise their temperature before being used.
From reading this blog, you’re sure to have a better understanding of: