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PolarStar Kythera HPA Engine for Airsoft Rifles (Model: SA - A&K SR-25)

SKU: PS-KYTHERA-V2.5-SR25 PolarStarIn Stock Map ProtectedPrice is map protected. Coupon(s) may not be applied to this item.

  • 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; weight, length of pull, and over travel
  • Adjustable nozzle dwell/return speed
  • Wide operating pressure range of 60 to 180 psi


In the Box

1x HPA Engine


Brand Polarstar
Compatibility SA - A&K SR-25 Rifles
Operating Pressure 60 - 180 psi
Velocity Ranges 270 - 500 FPS (measured w/ .20g BBs & 6.05 ID x 380 mm L barrel)
Firing Modes Semi Only

California Proposition 65 Warning: Cancer and Reproductive Harm -

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