Polarstar Jack HPA Conversion Kit Version Gearbox:M249 The BB can be any

The BB can be any weight from 0

Manufacturer: ProWin

With this sleek adapter in your arsenal

Introducing the Skirmish Arm Band—a must-have accessory for fields and events utilizing Skirmesh technology

Made from high quality polymer

Polarstar Jack HPA Conversion Kit Version Gearbox:M249 The BB can be anyCode 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