Polarstar - Jack V2 AR Buttstock To achieve the ultimate level

To achieve the ultimate level of fine tuning

feels very comfortable and is highly wear resistant

- 30A Mini fuse

All Gel Blasters with Rails

It also includes 6x elastic mag holder slots to hold your gas magazines

Polarstar - Jack V2 AR Buttstock To achieve the ultimate levelSimilar to its sister product, the F1, it replaces the original gearbox components with a programmable pneumatic system allowing for higher performance and greater reliability over a gear driven system. Although economically priced, JACK still retains the same performance and quality you have come to expect from PolarStar products. These engines have mag terminal wires inside package.