RA-TECH - New version flute valve for RA alum NPAS nozzle

• New version NPAS flute valve is now adopted in 

  RA aluminum NPAS nozzle(for WE M4, KSC/KWA M4) for better and more stable performance.
• For RA Aluminum nozzel with tool Adjust NPAS set

Note: It compatible with : RAG-WE-087 and RAG-KSC-009