X NPAS Whistle Valve Aluminium | Golden Eagle | RA-Tech

X NPAS Whistle Valve Aluminium | Golden Eagle | RA-Tech – for your replica

This NPAS (Negative Pressure Air System) whistle valve is an upgrade part for GBBR replicas that regulates the gas flow in your nozzle assembly. The system allows you to adjust the FPS of your replica without having to change springs. You use this part when you want more control over the output of your GBBR, for example in varying temperatures or for different field requirements. The NPAS valve replaces the standard whistle valve in compatible Golden Eagle models.

Technical specifications

This whistle valve is made from aluminium for durability and consistent performance. The silver-coloured finish matches most internals. The part consists of a threaded valve housing, an adjustable needle, a spring, and mounting components. The CNC-machined components ensure a precise fit in the nozzle assembly of your GBBR.

Compatibility and application

This NPAS system is developed for Golden Eagle GBBR models and similar platforms that use compatible nozzle assemblies. Installation requires disassembly of the bolt carrier group and replacement of the original whistle valve. Some technical experience with GBBR internals is recommended for correct installation and adjustment. After installation, you can fine-tune the FPS by adjusting the needle position.

Ready to add X NPAS Whistle Valve Aluminium | Golden Eagle | RA-Tech to your setup?