Tokyo Marui 4

Using a standard V2 as an example

High-Pressure Hose

and feel of a real single-action firearm trigger

PolarStar JACK Electro-Pneumatic Gearbox Conversion Kit V3 AK positive thread Tokyo Marui 4This JACK is for Version 3 gearboxes if you are in need of a JACK that is compatible with Version 2 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