RA-TECH Magnetic Locking NPAS for WE MSK GBB

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  • $251.10
  • Regular price $279.00
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  • Including an aluminum loading nozzle, three nozzle tips, steel nozzle guide set and a tool.
  • 7075 CNC aluminum made
  • Compatible with WE MSK series GBB
  • This is a new version of RA-TECH patented Negative Pressure Adjustable System (a.k.a. NPAS) for WE AR series GBB.???he loading nozzle is still made of 7075 CNC aluminum material adding with the new design of magnetic locking and exchangeable nozzle tip system.???he magnetic locking system can stable the flute valve position and avoid the muzzle velocity dropping during vibration.???layers can install different nozzle tips to get suitable muzzle velocity for different fields/games requirements.


Muzzle velocity data range tested with WE M4 GBB (inner barrel 370mm)/0.2g bb/green gas:


Red tip 0-145 m/s (approx. 475 fps)
Blue tip 0-125 m/s (approx. 410 fps)
Green tip 0-95 m/s (approx. 312 fps)


  • Recommended with Maple Leaf hop up buckings for better performance.

Youtube Video