Polarstar Jack V2 M4/M16 HPA Conversion Kit


  • Drop In Kit M4/M16 AEG
  • Semi, Burst, Auto Fire Modes
  • Custom Semi Auto & Full Auto ROF
  • Custom Full Auto ROF

Out of stock


Genuine Polarstar – Made in the USA


AEG HPA conversions are a huge advantage… They have a faster response, ninja silent operation, and the best reliability you will find.


Polarstar designed the Jack system to be an affordable, high performance HPA conversion kit for Airsoft Electric Guns! With some quirky features…

  • Rate of fire control
  • Semi Auto rate of fire limiter
  • Burst Fire
  • Custom fire selector
  • Anti Stiction Mode

The Jack is a True Blow forward, open bolt system for ultimate efficiency, and solid consistency

Capable of a whopping 500 FPS with .20g B.B running 130 PSI!

Most standard configurations with Jack are capable of reaching 30 RPS

Battery & male nipple hose fitting not included, sold separately


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