POLARSTAR AIRSOFT

JACK // ELECTRO-PNEUMATIC HPA ENGINE

V2 M4 / M16 GEARBOX CONVERSION KIT

MADE IN THE USA • CNC ALUMINUM CONSTRUCTION • DELRIN NOZZLE • PROGRAMMABLE FCU • SINGLE-MOVING-PART DESIGN

JACK

SIMPLIFIED ENGINEERING. ADVANCED ELECTRONIC CONTROL.

The PolarStar JACK Electro-Pneumatic Gearbox Conversion Kit – V2 M4 / M16 is a precision-engineered HPA conversion system developed for compatible Tokyo Marui-specification electric airsoft platforms.

Designed, manufactured, and assembled in the United States, JACK replaces conventional AEG gearbox drive components with a compact, electronically controlled pneumatic engine.

Its defining feature is mechanical simplicity.

Featuring a single primary moving component, CNC-machined aluminum construction, and a programmable Fire Control Unit, JACK delivers a streamlined alternative to traditional motor-driven airsoft gearbox architecture.

Positioned as an accessible entry into PolarStar’s HPA engine family, JACK combines the manufacturer’s established design philosophy with a compact cylinder-replacement configuration.

ONE MOVING PART. // DIGITAL CONTROL. // AMERICAN ENGINEERING.

CNC PRECISION

PURPOSE-BUILT INTERNAL ARCHITECTURE.

JACK incorporates precision-machined aluminum components and a high-performance Delrin nozzle.

The engine uses a compact pneumatic arrangement developed around efficient airflow and reduced mechanical complexity.

Unlike a conventional AEG gearbox containing multiple rotating gears and associated mechanical assemblies, JACK uses a solenoid-controlled pneumatic mechanism.

The nozzle serves as its primary moving component and incorporates the valve function.

PolarStar describes the engine as having just six principal components, contributing to its compact design and straightforward serviceability.

ELECTRO-PNEUMATIC DESIGN

CONSISTENCY THROUGH ENGINEERING.

JACK’s internal flow profile and pneumatic architecture are designed to support repeatable operating characteristics.

The system replaces conventional mechanical gearbox operation with electronically managed pneumatic control.

This architecture allows supported operating characteristics to be configured independently through the control electronics.

Actual results depend on the complete airsoft platform, compatible air supply, component condition, and environmental conditions.

JACK’s streamlined internal design also minimizes unnecessary pneumatic volume, contributing to the manufacturer’s efficiency-focused engineering.

DIGITAL FIRE CONTROL

THE POLARSTAR FCU.

JACK features a programmable Fire Control Unit (FCU) with an LCD display and five-position joystick.

The compact controller provides an interface for supported electronic operating functions.

Manufacturer-listed operating configurations include:

SEMI-AUTOMATIC

SEMI / FULL-AUTOMATIC

SEMI-AUTOMATIC ONLY

VARIABLE BURST

An automatic switch configuration feature supports appropriate selector arrangements on compatible platforms.

The FCU’s compact dimensions allow installation within suitable airsoft replica compartments, subject to available space and electrical compatibility.

RESPONSIVE ELECTRONICS

A DIFFERENT OPERATING SYSTEM.

Because JACK uses electronic pneumatic control rather than a conventional motor-and-gear arrangement, its operating response has different mechanical characteristics from a traditional AEG.

PolarStar markets the system around rapid electronic response and programmable operation.

Its compact engine architecture is intended to provide consistent performance without relying on conventional gearbox drive components.

The complete system must be configured and operated within the manufacturer’s limits and applicable airsoft field regulations.

PLATFORM COMPATIBILITY

V2 M4 / M16 CONFIGURATION.

This listing is specifically for the:

JACK V2 M4 / M16 MODEL.

The engine’s universal cylinder architecture supports multiple compatible gearbox families, but individual configurations require the correct model-specific components.

The V2 M4 / M16 version is intended for suitable Tokyo Marui-specification airsoft gearbox platforms with compatible center-line nozzle geometry.

Exact fitment depends on the gearbox shell, selector system, trigger components, and host replica configuration.

Professional installation is recommended.

ENVIRONMENTAL DESIGN

BUILT FOR VARIABLE CONDITIONS.

PolarStar describes JACK as capable of operating in damp and sub-freezing environments.

Its electro-pneumatic architecture avoids several conventional mechanical characteristics associated with motor-driven gearbox systems.

However, overall environmental reliability still depends on the complete installation, air supply, electrical components, seals, and maintenance condition.

Always follow the manufacturer’s environmental and operating specifications.

PERFORMANCE ARCHITECTURE

POLARSTAR JACK // V2.

Manufacturer: PolarStar Airsoft

Model: JACK V2 M4 / M16

Product Type: Electro-Pneumatic HPA Conversion Engine

Manufacturing: Designed and Built in the USA

Construction: CNC-Machined Aluminum

Nozzle: High-Performance Delrin

Engine Architecture: Single Primary Moving Component

Control System: Programmable FCU

FCU Interface: LCD Display / Five-Position Joystick

Operating Modes: Semi, Full Auto, Semi Only, Variable Burst

Platform: Compatible TM-Spec V2 M4 / M16 AEG Gearboxes

Approved Propellant: HPA or Nitrogen

External Air System: Not Included

REQUIRED FOR OPERATION

ADDITIONAL EQUIPMENT SOLD SEPARATELY.

The JACK conversion engine is not a complete standalone airsoft system.

A compatible installation requires:

• A suitable Tokyo Marui-specification AEG host platform and gearbox
• A compatible regulated air rig
• An approved HPA tank
• A compatible electrical battery

HPA TANK, REGULATOR, AIR RIG, AND BATTERY ARE SOLD SEPARATELY.

Additional platform-specific components or professional installation services may also be required.

INSTALLATION OVERVIEW

GEARBOX CONVERSION PLATFORM.

JACK is designed to be installed within the gearbox shell of a compatible AEG.

The manufacturer identifies the original trigger assembly, safety components, and selector components as parts retained for the converted platform.

Some configurations also require the original spring guide for structural attachment purposes.

Because installation involves the host replica’s internal mechanisms and a pressurized-air system, work should be performed by a qualified airsoft technician following PolarStar’s official documentation.

IMPORTANT HPA SAFETY NOTICE

PRESSURIZED-AIR SYSTEM REQUIREMENTS.

Use only HPA or nitrogen as specified by PolarStar. Never use CO2, propane, or other unapproved propellants.

Observe the manufacturer’s 120 PSI maximum regulated-pressure limit for the JACK system.

HPA tanks must be filled only by appropriately trained personnel and maintained in accordance with the tank manufacturer’s inspection and hydrostatic-testing requirements.

Never introduce oil into an HPA tank fill valve. Protect pressurized cylinders from impact, excessive heat, and improper transportation.

After use, follow the manufacturer’s approved shutdown and depressurization procedures.

Always consult the official PolarStar and air-system documentation before operation.

POLARSTAR AIRSOFT

JACK // V2 M4 / M16.

The PolarStar JACK Electro-Pneumatic Gearbox Conversion Kit combines American manufacturing, precision-machined components, and programmable electronic control in a compact HPA engine.

Its CNC aluminum construction, Delrin nozzle, simplified single-moving-part architecture, digital FCU, and V2 M4 / M16 compatibility make it a distinctive component within PolarStar’s electro-pneumatic product lineup.

For customers researching a PolarStar JACK V2, PolarStar JACK HPA engine, M4 M16 HPA conversion kit, PolarStar electro-pneumatic gearbox, JACK HPA conversion Canada, or PolarStar JACK Canada, this model offers a purpose-built engine for compatible airsoft platforms.

External HPA equipment and battery are required and sold separately.

POLARSTAR // JACK

V2 M4 / M16 // ELECTRO-PNEUMATIC // MADE IN USA

PRECISION CONSTRUCTION. // PROGRAMMABLE CONTROL. // SIMPLIFIED PNEUMATIC ENGINEERING.