Wyhaq shows how to install the PolarStar Airsoft Jack HPA Engine into an AAP-01 GBB pistol so it can use HPA as power source. He also includes entertaining breaks to keep you awake...  "This video I show how to install the popular Polarstar Jack hpa engine into an aap-01. It is actually not that hard to install a polarstar into one of these gbb replicas.

Airsoftjunkiez announced that their TM MP7 Resin Chassis for PolarStar Jack is available. This is a Custom 3D printed Chassis for the Custom MP7 JACK engine and will fit Tokyo Marui MP7 only. It will house Special Polarstar JACK engine designed for the MP7, with JACK FCU which is an easy drop in kit for the Marui MP7 and other compatible TM MP7 clones.

A battle of HPA engines. Woodland Raiders for a comparison of the PolarStar Airsoft Jack and the Mancraft PDiK... "Comparison of the operation of the newly purchased HP replica with the Polar Star Jack engine and the Mancraft Pdik gen3 air motor.

In the video you can see that the engine operating on the principle of a solenoid valve gives better repeatability when shooting than the Mancraft pneumatic device.

MickeyV talks about his compact HPA airsoft setup, an ESG Build that uses the PolarStar Jack as the HPA engine. It is a highly customised setup with an alphabet soup of brands and upgrade parts into it. The list of the parts below:

Parts List:

Demo by Airsoftjunkiez of their PolarStar JACK MAC10 Drop-In Kit. This kit will include the Special Polarstar JACK engine designed for the kit, with JACK FCU; Custom 3D printed RESIN Chassis for the JACK engine with full auto micro-switch; and mini connection circuit board. Also included are a trigger wire harness and custom length JACK FCU wire harness.

Airsoftjunkiez expand their customised HPA-powered ASG Scorpion EVO 3A1 with a version that uses the PolarStar Airsoft Jack HPA engine. This uses the BlackLeaf Airsoft ASG Scorpion EVO HPA Trigger Board and FCU Kit that is compatible with PolarStar and Redline engines and FCU to allow SEMI/BURST/AUTO and comes with an MCU Wire for Burst.

An overview of the Airsoftjunkiez Custom G&G PCC45 With PolarStar Airsoft Jack HPA Engine. With the G&G PCC45 AEG as the base gun, Airsoftjunkiez can build a custom HPA PCC45 for customers which will be shipped in 48-72 hours after order is placed as they need to configure and test the build to ensure that performs as expected.

Airsoftjunkiez announce that the chassis to use the PolarStar Jack Engine with the Tokyo Marui MP7 has been improved and available to order at their online store... "New and Improved Airsoftjunkiez MP7 chassis are finally ready after lots of hard work and testing. They’re stronger and less prone to cracking. Pick one up in a complete kit or upgrade your existing kit."

The Custom HPA Powered PolarStar Jack SSG-1 from Airsoftjunkiez is back in stock with three colour variants to choose from. Using the G&G SSG-1 as base gun, it uses the PolarStar Airsoft Jack HPA Engine with tuned FCU, 7.4 Lipo FCU Battery, and 3 PTS SpeedQB Midcap Magazines... "Airsoftjunkiez custom PolarStar Jack SSG-1 is back in stock. Comes with 3 SpeedQB mags."

It looks like Damascus Airsoft is happy with this licensed EMG Sharps Bros Jack M4 AEG that can be found on Evike.com.. Watch his video review to find out why... "You won't believe how I got this amazing rifle! Stick around in the video so you can see the performance, build and overall thoughts on this bad boy!"