Polarstar Jack HPA Conversion Kit Version Gearbox:V3 20g @ 130psi The JACK™

20g @ 130psi The JACK™ allows for easy velocity adjustment by changing input pressure and does not require different nozzles to reach its full velocity range

The Super bucking has a narrow entrance for more accurate shooting styles

Introducing Dual Lens Technology™

YOU MUST USE AN OAKLEY M-FRAME HELO KIT OR EQUIVALENT

Polarstar Jack HPA Conversion Kit Version Gearbox:V3 20g @ 130psi The JACK™Code Name "Simple Jack" The JACK 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 products, the JACK replaces the original gearbox components with a programmable pneumatic system allowing for higher performance and