How to Load CO2 Into an Airsoft Pistol

How to Load CO2 Into an Airsoft Pistol

Updated November 2020

At some point, you’ll try airsoft milsim and fall in love with it like the rest of us. I also thought I’d only ever play paintball but the first time I held a super-realistic airsoft gun in my hand…I knew I was hooked. But as any experienced player will tell you, you need to really be handy with your gun in this game…This is one of the reasons loading CO2 is so important.

However, it’s not only a matter of pointing and shooting even if you do have the best airsoft gun on the market. There are all kinds of mechanics to the proper usage of an airsoft weapon. And some of them are basic and sound simple enough, but you need to learn how to perform them in the beginning nevertheless. For example – how would you load CO2 into your airsoft pistol?

Don’t worry loading CO2 bb gun is not a complex thing- we’ll tell you everything that’s prerequisite knowledge right here. So, lock and load – and prepare to do the same with your airsoft pistol!

Best Airsoft Pistols

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Airsoft Pistol Parts

Before you can get started on loading CO2 cartridges into your pistol, you need to be aware of all the intricate mechanisms that are found in an airsoft pistol. Luckily for you, most of these pistols have pretty much the same basic internal parts; external attachments notwithstanding. So, this makes it quite easy to learn how everything works – once you’ve seen one internal mechanism, you’ve seen them all.

With that in mind, you should know that all of these pistols have a spring that’s used to power the weapon. And this is precisely the part that determines how quickly your BBs will be launched out of the gun’s barrel. Apart from that, the other main parts are:

  • Gears
  • Air Nozzle
  • Cylinder Head
  • Piston Head
  • Piston
  • Cylinder
  • Motor

The above-mentioned motor represents your airsoft pistol’s beating heart. If you want to get more performance out of your pistol, this is precisely the part you’ll want to upgrade in order to achieve that.

Your ammo will be loaded into the pistol’s magazine. Then, you load that magazine into the gun itself. Once this process is completed, all that’s left is to pull the trigger – and your BBs will begin flying at your target, in either semi-auto or auto-style; depending on your gun and personal preferences.

Loading Basics

How to put CO2 in bb gun? Of course, regardless of how well you show to understand the internal mechanisms of the gun; if you don’t load the CO2 properly, you won’t be able to fire. And not only that, but a badly loaded CO2 magazine can be dangerous as well.

That’s why we’ll give you a set of instructions to follow while loading the CO2 canister into the pistol. Before that, though – check if the tank you’ve purchased corresponds to your airsoft pistol. Once you’re certain of that:

  1. Begin with a pistol that’s empty, and without a loaded magazine inside.
  2. Turn the safety switch on, so that you’re completely secure while loading it.
  3. Inspect the base of the gun, and you’ll find a couple of screws holding a plate in place. Unscrew them carefully, and put them somewhere where you won’t misplace them during this process. They’re generally incredibly small and easy to lose.
  4. If there is a previous tank of CO2 present in the pistol, take it out.
  5. Now that you’ve got an empty slot, push the CO2 tank inside, neck-first.
  6. Insert all of the studs and put the grip cover back in place. Be careful while doing this, as you need to be sure that your grip is aligned with the case.
  7. Put the screws back on in order to lock the canister in place, and turn them clockwise. Do so until they’re fully tightened.
  8. Now your airsoft gun is fully loaded and ready to be used on game opponents!

A Couple of Notes

So, now you’ve learned everything that you need to know about how to load a bb gun. However, while we’ve already mentioned that the safety switch needs to be on while you’re doing this – there are also a couple of other considerations to make in terms of user safety.

For example, you need to be absolutely certain that any BBs and the magazine are out of the pistol before you begin loading your CO2 tank inside. Not doing so may cause accidental stray BBs to fly around, and potentially cause you or bystanders serious harm.

Also, when handling the CO2 tank, you need to be quite careful – make sure to wear the proper protective gear in order to cover your eyes and prevent hypothetical damage. Furthermore, only replace the CO2 tank if you’re sure that it’s completely empty. Otherwise, there’s a chance that you could end up with residual gas causing extreme injuries.

As we’ve mentioned above, only try to put in a CO2 tank that’s guaranteed to fit your gun; don’t attempt to make any DIYalterations in this regard. Apart from that, dispose of any leftover cartridges of CO2 safely once you’re done. And perhaps most importantly – when you set out to do this task, we advise being certain that you’ve got every tool you need to finish this safely and quickly.

Understanding everything about your personal safety while handling a CO2 shotgun airsoft is equally important to knowing everything about the loading process.


So, now you’ve got all of the theoretical knowledge required to both successfully replace a CO2 canister in your airsoft pistol, and handle it safely and with care. Understanding the gun’s mechanism is also important to make this process and effective and secure as possible.

Right now, all that’s left is to do the steps we’ve described accordingly, and always have safety in mind. Soon enough, you’ll be charging across the airsoft field and having a roaring good time with your buddies!

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