Details
The G&P MWS CNC adjustable power nozzle is designed to help give a slight power boost to the base FPS of the TM M4 MWS platform GBB rifles. 
Compatibility: 
Tokyo Marui M4 MWS GBBR Series 
Includes: 
x1 G&P MWS CNC Adjustable Power Nozzle Valve (5.0) for Tokyo Marui M4A1 MWS GBBR