Polarstar F2 V2 Conversion Kit M4/M16

(12 customer reviews)


Estimated Arrival 25/11/23

In stock

Category: Tags: ,


Velocity Range: 250fps – 500fps

Operating Presure: 45-145 PSI

Compatibility: ALL AEG

Patented Dual Solenoid Design

The dual solenoid design of the F2™ provides the same functionality as the legendary Fusion Engine™ but in a more compact, efficient and flexible design. 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. Additionally, this makes it possible to change the firing sequence giving it the ability to operate in both true closed bolt as well as “AEG” mode.

Increased Efficiency

The F2™ incorporates a new one-piece, lightweight poppet valve design yet still operates on the same principle as the Fusion Engine™ poppet. This valve is able to operate at lower pressures and uses less air volume to function which optimizes air efficiency.

The standard F2 poppet is equivilent to the Red Low-Flow poppet of the Fusion Engine.

Spring Loaded Nozzle

The F2™ nozzle is spring biased forward which provides a consistent loading force regardless of operating pressure. It shares the same spring as the Fusion Engine™ with both light and heavy spring options available to adjust the loading force.

The robust design of the F2™ allows for an operating pressure range of 45psi to 145psi which enables it to achieve velocities from CQB to DMR while employing only one nozzle for the entire velocity adjustment range.

Offset Nozzles

F2 is compatible with virtually every AEG gearbox, including those with offset nozzles by using either a centerline or offset front cylinder. The front cylinders are interchangable and a centerline F2 may be converted to an offset F2 by simply swapping the front cylinder and nozzle.


NOTE – No battery or HPA gun side connector sold with F2, will need to be purchased also if required

Kit Contains:

  • F2 Engine
  • Standard FCU Board
  • Data Cable
  • V2 Trigger board

12 reviews for Polarstar F2 V2 Conversion Kit M4/M16

Based on 12 reviews
5 star
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1 star
  1. Anonymous (verified owner)

    Excellent product , easy installation into my Arp9 Thanks Reapertech for best cheapest NZ online shop.

  2. John (verified owner)

    I love it! Didn’t expect a few goodies that came with it

  3. Alif (verified owner)

    Lance was very helpful. Order was a little complicated but all good. Thanks again. Will definitely shop with you guys again!

  4. Justin Lopez (verified owner)

    The Apex of Airsoft

  5. Anonymous (verified owner)

    Good quality

  6. Joshua Abraham (verified owner)


  7. Joshua Abraham (verified owner)

    Great product

  8. Anonymous (verified owner)

    Fantastic product

  9. Malcolm (verified owner)

    Why would you buy a lesser brand/model? Doesn’t make sense does it.

  10. Steven (verified owner)

    Best HPA engine out there

  11. Anonymous (verified owner)

    amazing, best upgrade

  12. Jarryd E. (verified owner)

    Had some weird issues with the F2, I had a jack before this and using the same setup was getting jams with goldenball bbs. Using lighter bbs and a different bucking seems to have fixed the issue.

    Also had a broken FCU (Battery wire was ripped off on arrival)

    Reaper tech offered to fix it though, but was easy enough!

    Image #1 from Jarryd E.
    Image #2 from Jarryd E.
    Image #3 from Jarryd E.

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