Polar Star JACK HPA Conversion Kit for M4/M16 (SJV2-M4) Airsoft High Pressure Air HPA System for Airsoft AEG Rifles

The Polar Star JACK HPA Conversion Kit for M4/M16's can easily have it's velocity adjusted on the fly to below 280fps to approximately 500fps. You can quickly adjust key functions of JACK via the on-board FCU which is tight and compact.

Features:

High performance delrin nozzle.
Universal cylinder design is compatible with numerous gearbox versions
Optimized flow profile, firing point and flow path promotes superior shot consistency and accuracy.
Independently adjustable velocity and cyclic rate
Capable of functioning in damp and sub-freezing climates without affecting performance or reliability
User selectable Semi/Full Auto, Semi Auto Only and Variable Burst modes. Auto Switch mode allows for proper selector configuration for specific models
Easy to use Fire Control Unit (FCU) with LCD display and five position joystick
Instantaneous trigger response. Faster than an AEG with a Li-po

Specifications:

Compatibility: PolarStar PR-15, Fusion Engine, Valken and Wolverine HPA engines. Attaches to any HPA Tank.
Construction: Brass, Steel, Nylon
Color: Black
Nozzle: M4/M16 V2
Manufacturer: Polar Star

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Polar Star Polar Star JACK HPA Conversion Kit for M4/M16 (SJV2-M4) Airsoft High Pressure Air HPA System for Airsoft AEG Rifles