NPAS Nozzle Valve for VFC GBBR's cover All these settings can be

All these settings can be adjusted via a handy programming device

Hopup bucking is not included

This heavy weight set (96g combined weight) replaces the original piston and spring guide in the S&T Lee Enfield sniper rifle

Adjustable with allen key (not included)

it is easy to adjust the hopup through the window cuts on either side of the body

NPAS Nozzle Valve for VFC GBBR's cover All these settings can beJaeger precision NPAS Valve for VFC GBBR's. Adjust powerlevel of your replica to different field limits! Yellow floating valve made from high strength 3D printed nylon. The grubscrew uses a 1. 5mm allen key to adjust the preset, thereby lowering the total gas volume that gets into the barrel to accelerate the BB.