Jag Precision sent in an announcement that the PolarStar Airsoft "The Jack" is now in stock and ready to be delivered... "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.

• Designed to fit both V2 and V3 Gearboxes
• Simple, User Friendly upgrade
• Increase or Decrease your FPS with ease
• Easy Install - Assembly/ Disassembly
• Built with stable Lightweight Material
• Impact resistant construction

Features:

• Designed, manufactured and built in the U.S.A.
• Assembled from CNC machined aluminum components with 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.
• 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.
• 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!"