Similar to CO2-powered airsoft pistols, CO2 airsoft rifles typically use 12-gram cartridges filled with liquid carbon dioxide to not only power the replica but also provide players with realistic blowback. Available in semi-auto and full-auto configurations, CO2 airsoft rifles offer distinct advantages over green gas-powered airsoft rifles, even in non-blowback (NBB) platforms.

Beginner airsoft players who want to try their first blowback often gravitate towards CO2 airsoft rifles or pistols before graduating to gas blowback (GBB) platforms.

What Are CO2 Airsoft Rifles?

CO2 airsoft rifles are airsoft replicas powered by carbon dioxide (CO2) capsules that provide the pressurized gas necessary to work the internals and propel airsoft BBs out of the muzzle.

These capsules are often housed in the magazine or stock, depending on the replica’s design and configuration. Airsoft players can choose from non-blowback (NBB) and blowback variants from many popular manufacturers, available across multiple platforms and price points.

How Do CO2 Airsoft Rifles Work?

When you pull the trigger of a CO2 airsoft rifle, the hammer strikes a gas release valve that releases liquid CO2 from the 12-gram capsules.

As the carbon dioxide hits the air, it converts into a high-pressure gas that works the internals necessary to lob a BB down range. In blowback versions, the released CO2 provides simulated recoil.

Compared to green gas-powered airsoft rifles, CO2 versions can offer greater power due to their higher operating pressures. Because CO2 is more stable than green gas at varying temperatures, it’s also ideal for year-round use, especially on airsoft fields that see stark differences in seasonal weather patterns. However, both types of airsoft rifles are available in semi-auto and full-auto.

Popular CO2 Airsoft Rifle Models

Marushin, G&G, and Umarex are among the most popular manufacturers of CO2 airsoft rifles. For example, the Marushin M1 Garand EXB2 Walnut 6mm Co2 Blow Back Rifle (Brass Piston) is popular among players who want to run historical airsoft replicas.

Below are other popular CO2 airsoft rifles, all available from eHobby Asia:

APS X1 Xtreme CO2 Blow Back Airsoft Rifle : This CO2 airsoft rifle excels in close-quarters battle (CQB) scenarios with its short length and 30-round magazine.
Gun Heaven (WinGun) Mosin-Nagant Co2 Bolt Action Rifle : Fans of historical rifles will appreciate this CO2 bolt-action rifle, which features a full metal bolt system and faux wood stock.
G&G GM1903 A3 Bolt Action Rifle (Real Wood, CO2 Version) : Nothing beats running a M1903 Springfield airsoft replica with a real wood stock.
Double Bell Winchester M1892 CO2 Lever Action Real Wood Randall (107) : Load the four metal shells into the Mare’s Leg for realistic recoil from this lever-action CO2 airsoft rifle.
Northeast UZI 60 CO2 Blow Back Airsoft : Mimic your favorite action heroes with this UZI CO2 airsoft replica.
EMG (APS) F1 Firearms UDR CO2 Blow Back Airsoft Rifle : If you’re looking for something more modern, this CO2 airsoft rifle features F1 and Demolition Ranch engravings.

Ready for your first or next CO2 airsoft rifle? Explore eHobby Asia’s extensive selection of replicas from numerous popular manufacturers. For more information on airsoft gases, check out our guide to the 5 Best CO2 Airsoft Pistols.