EPES HPA Adapter MK2 for KWA / KSC – Foster QD Coupling

The EPES HPA Adapter MK2 for KWA / KSC is the upgraded iteration of a proven HPA interface, engineered for players seeking reliable hydraulic power system conversion on KWA and KSC gas blowback and AEG platforms.

Key Features

• Foster US QD-style coupling – industry-standard, quick-disconnect interface
• Blackened stainless steel construction – corrosion-resistant finish with professional aesthetic
• MK2 generation upgrades – refined surface treatment and improved structural tolerances versus the original
• KWA / KSC platform compatibility – direct fitment on KWA and KSC gearbox designs
• Compact, lightweight design – minimal impact on handling and weight distribution

Real-World Use Cases

Ideal for milsim players and skirmishers running extended-duration events who want to switch their KWA or KSC replica to HPA for better efficiency, consistent performance across temperature ranges, and reduced wear on mechanical components. Also favoured by technicians upgrading customer builds.

Technical Specifications

• Coupling style: Foster US QD
• Material: Stainless steel, blackened
• Compatibility: KWA / KSC gearbox platforms
• Finish: Blackened (anti-corrosion)

Compatibility & Upgrades

This adapter pairs with any standard HPA tank and regulator system featuring a Foster US female QD connector. Works on both gas blowback and AEG KWA and KSC models with compatible gearbox mounting points. Check your specific replica’s manual or consult our team for fitment confirmation.

UK Legal & Site Notes

HPA systems are legal in the UK and widely accepted at airsoft sites. Always confirm your site’s HPA policy and chrono limits before deployment. The adapter itself does not alter chronograph readings; output depends on your regulator and tank setup.

Ready to upgrade? Stock this proven EPES MK2 adapter and unlock the efficiency and reliability benefits of HPA on your KWA or KSC platform.