PolarStar "Kythera" HPA Engine for Airsoft Rifles

Features 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/return speed Wide operating pressure range of 60 to 180psi