Byrna SD XL Compatible CO2

Overview

The Byrna SD XL is designed to operate exclusively with 12-gram CO2 cylinders. This larger CO2 cylinder provides increased shot capacity compared to the standard SD launcher that uses the smaller 8 gram cylinders. Although the SD XL has been discontinued, it remains compatible with Byrna 12g CO2 cylinders.

What CO2 Does the Byrna SD XL Use?

The Byrna SD XL requires 12g CO2 cylinders. These cylinders supply the compressed gas needed to propel .68 caliber projectiles and are integral to the launcher's operation.

Using the correct cylinder size helps ensure:

• Reliable puncturing
• Consistent pressure delivery
• Proper sealing
• Optimal launcher performance

Compatible CO2 Cylinders

Recommended

• Byrna 12g CO2 cylinders

Byrna-branded cylinders are designed for compatibility with Byrna launchers and offer dependable performance.

Also Compatible

• Standard 12g CO2 cylinders that meet dimensional specifications

Many third-party 12g cylinders can function properly in the SD XL, provided they fit and puncture correctly.

Incompatible CO2 Cylinders

The following should not be used in the Byrna SD XL:

• 8g CO2 cylinders
• Undersized cylinders
• Oversized cylinders
• Crosman brand cylinders 
• Any non-standard CO2 cylinder that does not match the SD XL's design requirements

Because the launcher is engineered around the 12g format, smaller cylinders will not function properly.

SD XL vs. SD CO2 Compatibility

One of the key differences between the Byrna SD XL and the standard Byrna SD is the CO2 system.

Byrna SD XL

• Uses 12g CO2 cylinders
• Higher shot capacity

Byrna SD

• Uses 8g CO2 cylinders
• Lower shot capacity

CO2 cylinders cannot be interchanged between the two models.

Potential Issues With Third-Party CO2

While many 12g CO2 cylinders are compatible, manufacturing tolerances can vary between brands. In some cases, users may experience:

• Incomplete puncturing
• Seal issues
• Inconsistent gas release

If reliability is a priority, using Byrna-branded CO2 cylinders is generally recommended. 

DO NOT use Crosman brand cylinders as they can damage the launcher's puncture pin assembly and/or may not puncture at all.

Frequently Asked Questions

What size CO2 cylinders does the Byrna SD XL use?

The Byrna SD XL uses 12g CO2 cylinders .

Can I use an 8g CO2 cylinder in the SD XL?

No. The SD XL is specifically designed for 12g CO2 and is not compatible with 8g cylinders.

Do all 12g CO2 cylinders work?

Many standard 12g cylinders will work, but compatibility and reliability can vary by manufacturer.

Is the SD XL the same as the SD when it comes to CO2?

No. The SD XL uses 12g CO2 cylinders, while the standard SD uses 8g CO2 cylinders.