Injection-moulded adapter enabling EU-series pistols to use M4 AEG magazines with HPA systems.

Features
• High-strength injection-moulded polymer body
• Standard US-thread HPA fitting pre-installed
• Integrated BB-retention system prevents feed loss
• Removable magwell insert and shim set for tuning fit
• Accepts standard M4 AEG magazines via direct HPA feed
• Delivers consistent FPS without gas cooldown
• Performs reliably in cold weather conditions

The AirTac HPA Adapter EU to M4 converts EU-series gas blowback pistols to operate with standard M4 AEG magazines powered by high-pressure air. Precision-moulded from a strong polymer blend, the adapter offers a solid, lightweight construction that stands up to intense gameplay. The pre-installed US-thread fitting connects directly to your HPA line for easy setup, while the integrated BB-retention system maintains feed stability and prevents round loss during reloads.

Switching to HPA offers a significant boost in consistency and control. Each shot delivers stable FPS output without the temperature-related cooldown seen in traditional gas magazines, improving both accuracy and reliability in long engagements. Using standard M4 magazines increases ammunition capacity while keeping performance smooth even in cold conditions. Complete with magwell insert, shim set, and screw hardware, this adapter is a dependable upgrade for players demanding high-efficiency and all-weather readiness from their secondary platform.