GBB Upgrade Parts

Sort By:  
RA-Tech NPAS Kit for WE Open Bolt GBB

RA-TECH NPAS KIT for WE Open Bolt gas blowback rifles. 

The RA Tech NPAS (Negative Pressure Air System) enables the FPS of your rifle to be adjusted according to different site limits and changes in ambient temperature.  Take away uncertainties and enjoy your GBBR in much more locations/times of year.  

Kit fits all WE Open Bolt gas blowback rifles/SMG's that use a two part loading nozzle.

To better understand how the NPAS works - watch the video here.

Per Page      1 - 1 of 1
  • 1