---
product_id: 50335686
title: "New Polarstar F2 REV.3 HPA Kit for Ver.2 M4/M16 W/Full Size FCU & Free LiPo Battery"
brand: "polar star"
price: "€ 14.60"
currency: EUR
in_stock: false
url: https://www.desertcart.hr/products/50335686-new-polarstar-f2-rev-3-hpa-kit-for-ver-2
store_origin: HR
region: Croatia
---

# Velocity: 250-500 fps Pressure: 45-145 PSI Free 7.4v LiPo Battery New Polarstar F2 REV.3 HPA Kit for Ver.2 M4/M16 W/Full Size FCU & Free LiPo Battery

**Brand:** polar star
**Price:** € 14.60
**Availability:** ❌ Out of Stock

## Summary

> ⚙️ Elevate Your Game with Precision Engineering!

## Quick Answers

- **What is this?** New Polarstar F2 REV.3 HPA Kit for Ver.2 M4/M16 W/Full Size FCU & Free LiPo Battery by polar star
- **How much does it cost?** € 14.60 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/50335686-new-polarstar-f2-rev-3-hpa-kit-for-ver-2)

## Best For

- polar star enthusiasts

## Why This Product

- Trusted polar star brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Bonus Power Boost:** Get a FREE 7.4v 250 mAH LiPo FCU Battery to kickstart your performance!
- • **Adaptable Powerhouse:** Operating pressure flexibility from 45 to 145 PSI for customized performance.
- • **Unleash Your Precision:** Experience unparalleled velocity control with a range of 250 to 500 fps.
- • **Universal Compatibility:** Custom nozzle lengths ensure compatibility with ALL AEGs for ultimate versatility.
- • **Compact & Efficient Design:** The F2 engine redefines efficiency with its sleek, space-saving architecture.

## Overview

The New Polarstar F2 REV.3 HPA Kit is designed for Ver.2 M4/M16 models, offering a velocity range of 250 to 500 fps and an operating pressure of 45 to 145 PSI. This compact and efficient engine is compatible with all AEGs and comes with a free 7.4v 250 mAH LiPo battery, ensuring you have everything you need for peak performance.

## Description

F2 is essentially a Mini Fusion Engine. It offers the same adjust-ability and performance as the Fusion Engine in a cylinder sized package. The F2 nozzle is spring biased forward which provides a consistent loading force regardless of operating pressure. Dual solenoids allow for the nozzle and the poppet valve to be adjusted independently of each other for unparalleled control over both the loading time and air volume used.

## Features

- Velocity Range: 250fps - 500fps
- Operating Pressure: 45-145 PSI
- The F2 engine provides a more compact, efficient, and flexible design.
- Custom nozzle lengths available, Compatibility: ALL AEG
- 7.4v 250 mAH LiPo FCU Battery Included FREE! (Brand may vary)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand Name | Polar Star |
| Manufacturer | PolarStar |

## Product Details

- **Brand:** Polar Star
- **Manufacturer:** PolarStar
- **UPC:** 791082717015

## Images

![New Polarstar F2 REV.3 HPA Kit for Ver.2 M4/M16 W/Full Size FCU & Free LiPo Battery - Image 1](https://m.media-amazon.com/images/I/51imx4mZuZL.jpg)
![New Polarstar F2 REV.3 HPA Kit for Ver.2 M4/M16 W/Full Size FCU & Free LiPo Battery - Image 2](https://m.media-amazon.com/images/I/61anVM8-8DL.jpg)
![New Polarstar F2 REV.3 HPA Kit for Ver.2 M4/M16 W/Full Size FCU & Free LiPo Battery - Image 3](https://m.media-amazon.com/images/I/61NZeIS9UtL.jpg)

## Questions & Answers

**Q: Will it work with a m4 platform**
A: Hello, yes this package is for V2 Gearbox M4/M16

**Q: Does this include an FCU?**
A: Absolutely! this is the whole kit with full size FCU.

**Q: Will this fit in a valken battle machine V2?**
A: Yes, but if you are not familiar with Polarstar installation we highly recommend you to let a skilled Airsoft Tech to do it locally, ....or you can send the gun to us.

**Q: Does this work with a Lancer tactical gen2?**
A: This works with any standard Gen2 Gearbox, however professional installation is required. Some GB brands requires some minor mods. We offer Professional Installation at discounted price when purchased with any Polarstar Kit for $60 for standard Gen 2 Gearbox (Reg. $90) to $120+ depending from gun type. (+ Shipping)

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**Shop now:** [https://www.desertcart.hr/products/50335686-new-polarstar-f2-rev-3-hpa-kit-for-ver-2](https://www.desertcart.hr/products/50335686-new-polarstar-f2-rev-3-hpa-kit-for-ver-2)

---

*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-02-08*