Byrna HD – Compatible CO2 Cylinders

Summary

The Byrna HD is designed specifically to operate with 8g CO2 cylinders. Using the correct cylinder size is critical to ensure proper function and reliability.

Key Takeaways

• The Byrna HD uses 8g CO2 cylinders only.
• 12g CO2 cylinders are not compatible.
• 8g CO2 is less common than 12g.
• Byrna-branded CO2 is recommended for best performance.
• Some third-party cylinders may fail to puncture properly.
• Compatibility is identical to the Byrna SD.

Overview

The Byrna HD runs on 8g CO2 cylinders, which provide the necessary pressure to fire .68 caliber projectiles. This system is the same as the Byrna SD platform.

Because the HD is engineered around the smaller 8g cylinder, attempting to use any other size will result in improper fit and failure to operate. To maintain consistent performance, Byrna recommends using their branded CO2 cylinders.

How It Works

1. Insert an 8g CO2 cylinder into the launcher.
2. Secure it with the threaded cap.
3. Pulling the trigger punctures the cylinder.
4. The system pressurizes and becomes ready to fire.

Compatibility

Compatible

• 8g CO2 cylinders

Recommended

• Byrna 8g CO2 cylinders

Not Compatible

• 12g CO2 cylinders
• Any incorrect cylinder sizes

Use Cases

• Training and drills
• Practice shooting
• Personal defense readiness

Important Considerations

• Only use 8g CO2 cylinders in the Byrna HD.
• 12g cylinders will not fit or function.
• Some off-brand cylinders may not puncture reliably.
• Always replace empty cylinders promptly.
• CO2 compatibility is the same as the Byrna SD.

FAQs

What CO2 cylinder does the Byrna HD use?

8g CO2 only.

Can I use a 12g CO2 cylinder?

No, 12g CO2 cylinders are not compatible.

Are all CO2 brands the same?

No, some may not puncture or perform consistently.

Is the CO2 compatibility the same as the Byrna SD?

Yes. Both use 8g CO2 cylinders.