• Sale
  • Regular price $920.00
Tax included. Shipping calculated at checkout.


Looking for the best of the best for your gel blaster? Why not consider going to an HPA system but first what is an HPA system? Unlike most electronic gel blasters that feature a battery system powering a motor that in turn rotates three gears to pull a piston back and compress air in a cylinder, HPA gel blasters are powered by an external canister of pressurized air much like most paintball guns. These large, external canisters provide HPA guns quite a bit more power than traditional electronic gel blasters as well as CO2 & Green gas-powered gel blasters, allowing for faster rates of fire and higher FPS. While this may seem to make HPA gel blasters the clear choice for anyone who wants to be as competitive as possible on the field, there are a number of factors to consider for making your HPA powered gel blasters. For now, just understand that an HPA gel blaster is a gel blaster that is traditionally powered by an external canister of pressurized air as opposed to an internal canister of C02 or green gas or the piston and gear system of an electronically powered gel blaster.

Automatic electric gel blasters and HPA gel blasters both work by using pressurized air to accelerate gel balls out of the gel blasters. In electronic gel blasters, this pressurized air is created within the gel blaster before each shot via a mechanical system that is powered by batteries. In an HPA gel blaster, pressurized air is stored in an external canister (Tank) and delivered to the gel blaster with each pull of the trigger rather than relying on a mechanical process to create pressurized air within the gel blaster itself.

The JACK™ was designed to answer the demand for an affordable, high-performance HPA (High-Pressure Air) conversion for Electronic Gel Blasters. 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 products, the JACK™ 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, the JACK™ still retains the same performance and quality you have come to expect from Polarstar products.

The JACK™ has only one moving part, the nozzle, which acts as its own poppet valve. Similar to the Fusion Engine™ and F2™ poppet, the nozzle is only piloted by the solenoid to open airflow through the poppet with none of the firing air coming from the solenoid itself. This design lets the JACK™ send a higher flow of air down the barrel than systems that only use a solenoid as the firing valve.

  • 1 x Polarstar JACK Engine
  • 1 x Polarstar V2 Trigger Control Board
  • 1 x Polarstar Fusion Engine Revision 3 FCU (Fire Control Unit)
  • 1 x Polarstar Internal Grip Line
  • 1 x Polarstar MRS (Mirco Regulator System) Regulator
  • 1 x Polarstar 42" Black Braided HPA Air Line
  • 1 x Polarstar Magazine Terminal Wire

Max Pressure:

130 psi

Build Material:

CNC Aluminium

Trigger Style:

V2 Trigger System

Compatible With:

V2 Style Gearboxes

Mag Wire Included:

Not Included


!!! This compatibility list is what we (L.O.W Staff) know that this item fits at this point of time. This item could fit other new models that are not listed yet. If you are buying this for a model that is not listed please ensure that you are 100% sure that this part fits your model before purchase. If unsure give Lord of War staff a call and we will be able to help you as we do not accept returns of parts not in their original sealed packaging. !!!