Polarstar - EMG Blue & Silver Edition JACK Electro-Pneumatic Gearbox Conversion Kit

The JACK system was designed to answer the demand for an affordable, high performance HPA (High Pressure Air) conversion for AEG's. The system is a drop-in cylinder replacement that is universally compatible with a wide range of gearbox versions that have center-line nozzles.

Similar to its sister product, the F1, it replaces the original gearbox components with a programmable pneumatic system allowing for higher performance and greater reliability over a gear driven system. Although economically priced, JACK still retains the same performance and quality you have come to expect from PolarStar products. 

Features

• Assembled from CNC machined aluminum components with high performance delrin nozzle. Designed, manufactured and built in the U.S.A.
• Universal cylinder design is compatible with numerous gearbox versions
• Optimized flow profile, firing point and flow path promotes superior shot consistency and accuracy
• 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
• Independently adjustable velocity and cyclic rate. Instantaneous trigger response. Faster than an AEG with a Li-po
• Auto Switch mode allows for proper selector configuration for specific models