This is a replacement nozzle valve (rocket valve) system for the Viper Tech airsoft GBB platform. Once installed in a VT nozzle (no modification to VT parts required), it allows external adjustment up to around 2J (with .3g BBs) via a hex key.
This listing is
only for the valve itself. To assemble the complete system,
you will also need:
-Our
Adjustable Nozzle Collar
-1x 10mm long M3 grub screw
-1x 10mm long pin (or nail cut to length), 1.5-1.6mm diameter
Full installation instructions
can be found here.