PolarStar JACK Electro-Pneumatic Gearbox Conversion Kit V2 M4 MAXX Model Airsoft Multiple load-out options are encouraged

Multiple load-out options are encouraged via Quikstrip™ function

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one trait that is of monumental importance is the stock

worldwide reputed by its professional on making highly realistic Airsoft replica with custom grade performance of internal mechanical design

PolarStar JACK Electro-Pneumatic Gearbox Conversion Kit V2 M4 MAXX Model Airsoft Multiple load-out options are encouragedThis JACK is for Version 2 gearboxes if you are in need of a JACK that is compatible with Version 3 gearboxes CLICK HERE The JACK system was designed to answer the demand for an affordable, high performance HPA 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