PolarStar Kythera SA Mechanical HPA Kit

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  • Polarstar Kythera SA Mechanical HPA Kit
  • Polarstar Kythera SA Mechanical HPA Kit
  • Polarstar Kythera SA Mechanical HPA Kit
  • PolarStar Kythera SA Mechanical HPA Kit
Your Price $275.00


The Polarstar Kythera SA does not need a battery or an FCU. It is fully mechanical and you will never have to use battery or other electronics to use it. The system is completely waterproof and contains very few parts. This means that installation and maintenance should be easy. 

The Kythera SA can operate between 60 and 180psi. Within this pressure range we observed a muzzle velocity of 270 - 500fps w/ .20g using a 6.05x380mm barrel.

Features & Specs:

  • Manufacturer: PolarStar Airsoft
  • Mode: Kythera SA
  • Options:
    • V2 for M4/M16
    • V3 AK
    • V2.5 JG/A&K SR-25 or similar
  • Material: Metal
  • System: Mechanical HPA System
  • Semi Auto Only
  • Realistic Trigger
  • Operating Pressure: 60-180psi
  • Complete Shot Cycle
  • Extremely Efficient and Consistent
  • Easy Installation
  • Wide Velocity Range
  • Designed from the ground up as a high performance mechanical HPA system, not a modification of a solenoid operated design.
  • Patent pending valve mechanism provides excellent efficiency and consistent velocity combined with a realistic trigger pull and reset.
  • Completes a full shot cycle on the trigger pull alone which translates into consistent nozzle movement and rapid follow up shots.
  • Adjustable trigger. Adjustments include: Weight, length of pull and over travel.
  • Adjustable nozzle dwell and nozzle return speed.
  • Wide operating pressure range of 60 to 180psi

Package Includes:

  • 1x PolarStar Kythera SA (V2 M4 / V3 AK / V2.5 SR-25)

For use with AEG Gearboxes, Installation Required
You may need to have a HPA Regulator & Tank


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1 Review

  • 5

    Posted by Daniel VanRenselaar on Fri Jul 03, 2020

    Took forever. Late by three months due to covid. Worth the wait. Stable fps within 1+/-. Getting 200ft hits from a cqb barrel at 1.6j. Definitely gonna look at the bolt and full auto versions, when they come out.

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