CNC steel bolt | NPAS nozzle | WE M4 open bolt | RA-Tech

CNC steel bolt | NPAS nozzle | WE M4 open bolt | RA-Tech – for your replica

This CNC steel bolt with NPAS nozzle is an upgrade part for WE M4 GBBR replicas. It replaces the original bolt carrier group and offers two key features: increased durability due to the steel construction and the ability to adjust the joule output via the NPAS (Negative Pressure Adjustment System) nozzle. If you are looking for an airsoft bolt upgrade for more consistent performance or need to meet different field limits, this is a practical solution.

Technical specifications

The bolt is manufactured from CNC-machined steel with a black finish. The NPAS system is integrated into the nozzle and can be adjusted with the included Allen key. The open bolt configuration provides realistic operation and feedback during shooting. The weight of the steel construction contributes to a more powerful blowback action.

Compatibility and application

This bolt is specifically designed for WE M4 GBBR replicas with an open bolt system. Installation requires disassembly of the upper receiver and replacement of the complete bolt carrier group. Basic knowledge of GBBR internals is recommended. The NPAS system allows you to adjust the FPS without changing springs, which is convenient for different playing fields.

Ready to add CNC steel bolt | NPAS nozzle | WE M4 open bolt | RA-Tech to your setup?