Polarstar JACK HPA Version 3 Conversion Kit w- REV3 FCU spring rifle fast cycle

fast cycle

or 25 rounds per second

It features a metal receiver and microswitch trigger for fast engagement

Functioning Bolt Catch & Ejection Port Dust Cover

This feature enables the user to install an optional 90 degree fitting inside of their engine allowing the air line to be routed to the rear of the engine and exit through the buffer tube sling plate on an M4 series rifle

Polarstar JACK HPA Version 3 Conversion Kit w- REV3 FCU spring rifle fast cycleDescription: Polarstar JACK HPA Version 3 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