How Long Do Byrna CO2 Cylinders Last?

Summary

Byrna CO2 cylinders provide reliable power for your launcher, but they do not last indefinitely once punctured. After puncture, CO2 will slowly lose pressure over time, even if the launcher is not used. For consistent performance, cylinders should be replaced regularly and never stored long-term once punctured.

Key Takeaways

• CO2 cylinders activate on the first trigger pull, not during installation
• Once punctured, CO2 typically lasts between 24 and 48 hours
• Pressure gradually decreases over time, even if the launcher is not used
• Shot capacity varies by cylinder size and usage conditions
• Cylinders should be replaced when performance becomes weak or inconsistent
• Pulling the trigger with safety lever in "Safe" punctures the cylinder, even though a shot is not fired

Overview

CO2 cylinders are the power source behind Byrna launchers. When installed, the cylinder is not immediately activated. Instead, it is punctured during the first trigger pull, releasing compressed gas that propels projectiles.

Once punctured, the cylinder begins to lose pressure gradually. This natural loss happens even if the launcher is not fired again.

How Long CO2 Lasts After Activation

After puncture, a CO2 cylinder typically leaks out within 24 to 48 hours. During this time, pressure slowly decreases, which can affect shot consistency and velocity.

Leaving a punctured CO2 cylinder inside the launcher for extended periods of time can damage the seals inside the launcher.

Because of this, it is not recommended to leave a punctured cylinder installed for extended periods. 

CO2 Shot Capacity Comparison Chart

Actual performance will vary depending on usage conditions and environmental factors.

Key Factors That Affect CO2 Lifespan

Several variables can impact how long a cylinder lasts:

• Time since puncture
• Ambient temperature
• Condition of internal seals

Cold temperatures and worn seals can reduce efficiency and shorten usable life.

Best Practices

To get the most out of your CO2 cylinders:

• Install a cylinder only when needed
• Avoid storing your launcher with a punctured cylinder
• Replace the cylinder if performance drops noticeably
• Install an unpunctured CO2 cylinder when storing for self defense

Following these guidelines helps maintain reliability and prevents unnecessary wear.

Signs Your CO2 Needs Replacement

You may need a new cylinder if you notice:

• Weak or inconsistent shots
• Reduced projectile speed
• Failure to fire

Frequently Asked Questions

Does CO2 activate or puncture when installed?
No, activation occurs on the first trigger pull.

How long does CO2 last once punctured?
Typically 24 to 48 hours.

Can I store my Byrna with an UNPUNCTURED CO2 cylinder installed?
Yes. An unpunctured CO2 cylinder can remain installed and is recommended if you keep your Byrna staged for self-defense.

Can I store my Byrna with a PUNCTURED CO2 cylinder installed?
No. A punctured CO2 cylinder will lose pressure in 24-48 hours, can place unnecessary stress on the launcher's seals, and should not be left installed for extended periods.