EPES HPA Adapter – 12g CO2 Cartridge Solution

The EPES HPA Adapter bridges the gap between traditional HPA systems and portable CO2 propulsion, offering a practical solution for players seeking a more compact energy source without sacrificing system compatibility.

Key Features

• 12g CO2 cartridge compatibility – uses readily available, affordable disposable cartridges
• Standard HPA thread design – integrates directly with most HPA regulators and existing systems
• Compact form factor – ideal for sniper rifles and builds where tank volume is constrained
• Alternative propellant solution – eliminates the need for larger HPA tanks in space-limited applications
• Straightforward integration – no specialised tools or modifications required for most setups

Real-World Use Cases

This adapter excels in scenarios where a full HPA rig is impractical. Sniper builds, particularly those with tight stock volumes or minimalist designs, benefit greatly from the reduced footprint of 12g CO2 compared to conventional HPA tanks. It’s equally valuable for players transitioning from CO2 to HPA systems who wish to retain existing regulators and tuning. Field players working with compact AEGs converted to HPA will find this solution particularly effective for maintaining manoeuvrability without performance compromise.

Technical Specifications

• Propellant type: 12g CO2 cartridge
• Thread compatibility: Standard HPA regulator thread
• Design: Discharge valve not included (adapter only)
• Brand: EPES
• SKU: E004

Compatibility & Upgrades

This adapter works with the vast majority of HPA regulators manufactured to standard threading specifications. Confirm your regulator thread type before purchase. The adapter itself does not include a discharge valve, so you will need a compatible HPA regulator with integrated valve or a separate valve assembly to complete the system. This modular approach allows experienced builders to optimise pressure curves and performance for their specific platform.

UK Legal & Site Notes

HPA systems fall under the airsoft legal framework as with any other propulsion method. The adapter itself is an inert mechanical component with no legal restrictions. Always verify your site’s chrono limits and rules regarding HPA systems before deployment. CO2 cartridges are widely stocked and legal to purchase for airsoft use across the UK.

For compact, high-performance setups where traditional HPA tanks prove unwieldy, the EPES adapter offers genuine practical value. Ideal for sniper builds and minimalist platforms.