Description
Swiss Arms Co2 Capsule/Cartridge (Cybergun – 12 Gram – 633500)
This is a Swiss Arms 12 gram CO2 capsule, distributed by Cybergun under reference 633500. The 12g CO2 capsule is the standard power source for a huge range of CO2 airsoft pistols and revolvers, as well as many CO2 air pistols and BB guns, so it is one of the most useful consumables to keep in your kit bag.
Swiss Arms is Cybergun’s own brand, and its CO2 capsules are widely used across Europe. They are a straightforward, dependable choice for anyone running a CO2 replica, whether for skirmishing, target shooting in the garden or plinking at an indoor range.
How 12g CO2 works
A 12g capsule is a small sealed steel cylinder of liquid CO2. When you fit it into your replica and tighten the piercing screw or lever, a pin pierces the capsule’s seal and the gas is released into the replica’s valve. Each shot uses a little of that gas until the capsule is empty, at which point you simply replace it.
The number of shots you get from each capsule depends on the replica, whether it has blowback and the temperature. CO2 is more powerful and less affected by cold than green gas, which is why it is popular for outdoor games in the colder months.
Key features
- 12 gram CO2 capsule
- Swiss Arms brand, Cybergun reference 633500
- Standard size for most CO2 pistols and revolvers
- Performs well in cooler weather
- Easy to fit and replace
Compatibility
Suitable for replicas and air guns designed to take standard 12g CO2 capsules, such as CO2 airsoft pistols and revolvers and many BB air pistols. It is not for green gas magazines, larger 88g systems or HPA. Check your replica’s manual to confirm it uses 12g CO2. Please check the product listing and images for the number of capsules supplied.
Care and maintenance
Put a drop of silicone oil on the tip of each new capsule before fitting it, which helps protect the replica’s puncture seal. Always fire off or release any remaining gas before removing a capsule, and never leave a capsule fitted in a replica for long periods. Store unused capsules in a cool, dry place away from heat and direct sunlight, and never puncture, heat or throw them into a fire, even when empty.
Dispose of empty capsules responsibly; many recycling centres accept small steel gas cylinders once they are completely empty.
Who is it for?
Anyone who owns a CO2 airsoft pistol, revolver or BB air gun and wants a reliable supply of standard 12g capsules.
Please note: Keep out of reach of children. Always wear eye protection when shooting.








