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PolarStar Limited EMG Edition Airsoft PR-15 V2 Gen3 Fusion Engine Electro-Pneumatic Gearbox Kit (Configuration: Black Nozzle)

ID: 54994 (GB-PS-MG-EMG-BK)
5.0 stars, based on 3 reviews
PolarStar Limited EMG Edition Airsoft PR-15 V2 Gen3 Fusion Engine Electro-Pneumatic Gearbox Kit (Configuration: Black Nozzle)
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MAP ProtectedExempt From Coupons
The manufacturer of this product enforces a strict minimum advertised price (MAP) policy which excludes this product from any additional discount coupon codes. This item, however, may qualify for free shipping.

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Configuration Options:
*This is the newest version of Polar Star PR-15 gearbox and the plug type you receive will reflect the newest model.
The PolarStar Silver Ver.2 Fusion Engine offers all the same performance and reliability of the original fusion engine but comes pre-upgraded with with a red low flow poppet for increased efficiency and stability. Also included in the pre-upgraded Ver.2 Fusion Engine silver is the black M4 nozzle giving the user an FPS of 445 to 515 FPS depending on barrel length and PSI.
The limited edition EMG Edition Fusion Engine is hard anodized blue and silver with laser etched markings on both sides of the precision CNC machined aluminum shells.
The PolarStar M4 Fusion Engine takes place of any Ver.2 AEG Gearbox as a direct drop-in. It is powered via a High Pressure Air (HPA) setup and only requires a small battery (7.4v-9.6v NiMH or Lipo recommended) to power the on-board computer known as the Fire Control Unit (FCU). This kit comes with the necessary core parts to convert your AEG to the Fusion Engine system. HPA stabilizer and tank required but not included.
HPA system not included
Special Note: This limited edition of the Version 2 Fusion Engine has received an EMG makeover with anodized blue and silver along with laser etched markings on each of the CNC aluminum shells. A portion of the proceeds from the sale of the limited EMG Edition Fusion Engine will be donated to the Airsoft Nation Non-Profit Organization to help preserve the sport of Airsoft.


  • 100% Engineered and Assembled in the USA!
  • Hard anodized blue & silver w/ laser etched markings
  • Black nozzle and Red low-flow poppet valve installed. Allows for ultra low PSI and improved efficiency
  • Revolutionary Electro-Pneumatic Fusion Engine allows for an HPA setup in a compact space
  • Instant Trigger Response (literally, instant!)
  • Complete control of the system via the Fire Control Unit (FCU)
  • Fully Adjustable FPS and Rate of Fire
  • User adjustable Semi/Full-Auto, Semi-Only, 2rd-9rd Burst, and Open Bolt and Closed Bolt Firing modes
  • Consistent performance, regardless of the temperature
  • Fine Tuning of the Nozzle Dwell allows for accurate BB feeding with any magazine
  • Maximum FPS limit can be raised or lowered with optional Color-coded Air Nozzles (Not included)
  • Uses Standard TM AEG Hopup and Inner Barrel design allowing for AEG upgrade parts and the use of standard AEG magazines
  • New GEN3 design now interfaces with all V2 AEG triggers and selector plates for cross compatibility with many different models and platforms
Compatibility: For use with most Ver.2 compatible gearbox Airsoft AEGs. M4 nozzle included, other Ver.2 nozzles sold separately.

Nozzle Color: Black
Upgraded Poppet: Red
Max Velocity: (0.20g BB @ 120 PSI)
275mm Inner Barrel: 425FPS
380mm Inner Barrel: 455FPS
509mm Inner Barrel: 475FPS
*FPS listed is approximate. FPS will vary depending on PSI and barrel length used

Rate of Fire: 8 to 30 rounds per second, Adjustable
PSI Operating Range: 40-120 PSI (Do NOT exceed 120 PSI, otherwise you may damage the internal parts)
Power Type: High Pressure Air Tank (Tank and Regulator System not included)
Package Includes: Pre-Assembled Fusion Engine, FCU
Battery: 7.4v-9.6v NiMH or Lipo (Not included).

Manufacturer: PolarStar Airsoft / EMG (Evike Manufacturing Group)

Required Equipment:
The Fusion Engine is a very low maintenance, advanced system that requires a few necessary parts:
  • Airsoft AEG
  • HPA tank
  • HPA stabilizer/regulator
  • Small battery (7.4v-9.6v recommended. Can be LiPo or NiMH)
  • *The above items are not included, but are available here at

    Disclaimer on High Pressure Air (HPA) Systems:

    HPA Tanks are a safe and effective source of power though there are some precautions you must follow. Please follow these proper precautions when using HPA systems:

    - NEVER put oil in the fill valve of the tank, or else the tank can combust on refill and serious injury can occur. Lubrication is not necessary in HPA systems.
    - ONLY allow properly trained professionals to fill your HPA tank.
    - ALWAYS double check your Regulator pressure. Never raise the regulated pressure above 120 PSI.
    - Make sure to have your tank Hydro-Tested when necessary (Usually 3-5 years from date marked on tank, depending on make and model).
    - Be sure to properly transport your HPA tank. Store in a safe, secured place when in a vehicle, and be sure to stow in a bag or tank cover when in use. Avoid dropping the tank on hard surfaces as this can seriously damage the tank and lead to failure.
    - Always turn off the tank and bleed the air line when you are done. This will ensure a longer tank and system lifespan.

    3 Customer Reviews

    (Write a review)

    by Cynthia C. on 06/14/2017
    "It is great!!! Expensive as heck but worth it!!!
    by john d. on 12/12/2016
    "Will this fit in a we scar l gbb? If not point me in the direction to an hpa kit that does.
    by blase b. on 12/02/2015
    "Amazing!!! had some trouble installing it in my elite force m4 but i got new selector plate and it worked. awesome response time on semi and great full auto customization options for full auto and other stuff.10/10


    evrything you would want in a gun and more!


    pricy and tanks can be pretty heavy (im pretty small)

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