Polarstar - Jack V2 M16A4 1 Fires Around 270-280 FPS

1 Fires Around 270-280 FPS (Feet Per Second)

This can be installed on the back end of your receiver

an LCD screen display and USB charging

The CYMA M4 MK16 boasts a truly solid construction partnered with a massive amount of metal components across the blaster

Polarstar - Jack V2 M16A4 1 Fires Around 270-280 FPSSimilar 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.