PolarStar Fusion Engine Gen. 3 M4 AEG Drop-In Gear Box

[SI01][09606 / FEV2-M4 / PS FE M4/M16 GEN3]
$515.00
( 3 Reviews ) ❤ Add to Wishlist
OUT OF STOCK

The PolarStar Fusion Engine Drop-in Gear Box is the perfect way to convert your favorite AEG to the performance and reliability of PolarStar's high pressure air (HPA) system. The fusion engine completely takes the place of the AEG's gearbox as a direct drop-in, which means that you no longer have to ever worry about stripped gears, broken pistons, or leaking cylinders. 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 onboard computer, which is referred to as the Fire Control Unit (FCU), and is responsible for adjusting all of the features of the gun. Optional color-coded nozzles are available from PolarStar to be able to move the maximum FPS range either up or down.

Specifications:
Manufacturer: PolarStar
Model: Fusion Engine Drop-In Gearbox
Muzzle Velocity: Adjustable
Size: Replaces Ver. 2 Gearboxes
Package Includes: Entire drop-in assembly

Features:
Completely ready to drop-in
Adjustable FPS, ROF, and more
HPA system

Please Note:

  • This particular drop-in engine is designed to replace Ver. 2 gearboxes only.

Specifications
Manufacturer: PolarStar
Color: Black
Material: Metal
Package Includes: One (1) Fusion Engine
see 3 reviews | Write a Review
verified buyer
K. GEE | 2013-04-13
Product Information:
I bought this for my VFC 416 CQB and its great! Its a Polar Star, come on! I've been waiting for it to come back in stock for a while and finally receives it. Installation was fairly simple as its just a drop in V2 gearbox.. But its not really a gearbox its a FE haha (: Anyway I absolutely love this gun. Put a Noveske KX3 amplifier on it and scare away your enemies! 5/5 stars.

Pros:
Very user friendly

Amazing ROF if you mess around with it

Adjustable FPS if you lower or add more PSI (Just don't go over 120 and under 65)


Cons:
Might have to make minor adjustments for it to be able to fit into your V2 gun
verified buyer
E. RAMIREZ | 2013-09-22
Product Information:
Greatest thing to ever happen to Airsoft!!

Put this in my VFC Scar-L. Had to do some minor modding to the selector plate to keep the selector switch ambidextrous. Other minor work will have to be done to add the FCU to the butt stock or put it in the pistol grip.

Works flawless!!

Pros:
Adjustable Everything!!
No more Gear boxes to worry about!!
Will out perform every AEG on the field


Cons:
No cons what so ever. If you're looking to buy a new aeg just add in the extra money and get a fusion engine for your old body.
D. LAWTON | 2014-01-30
Product Information:
Is fantastic, its a great thing. It gives you the most out of your gun, it gives you reliability, adaptability, and awesomeness. It is most definitely worth every penny. I have fallen in love with the semi auto in this thing and it is built to VFC OEM bodies standards so for those of you guys out there with them VFC guns it is a direct drop in. I currently run mine in my VFC 416 and waste everyone

Pros:
Amazing
Whisper quite when you need it to be
Great ROF ( I know its adjustable first thing I did was mess with them settings)
That trigger response is amazing (I run closed bolt too)
Become even more feared on the field

Cons:
Well the dam thing is expensive as nut sacks, and the hose gets in the way when you need to go lefty to righty or righty to lefty
 
Will this fit a G&G G2 MBR 556 WH?
Will this fit a G&G G2 MBR 556 WH?

386 days ago
Andrew k
0
0

(I have this same question)
Staff Answer:
It may have fitment issues as the G2 line of G&G guns have a much beefier version of the standard V2 GB.

377 days ago
0
0
Will this fit a G&G G2 MBR 556 WH?

386 days ago
Andrew k
0
0

(I have this same question)
Staff Answer:
It may have fitment issues as the G2 line of G&G guns have a much beefier version of the standard V2 GB.

377 days ago
0
0
2 answers
1 asked
 
With this work for an ARES Amoeba GEN5 M4 13.5 (AM-009) ?
Checking options

400 days ago
Nicholas M
0
0

(I have this same question)
Staff Answer:
It is unlikely, as the Amoeba line uses a polymer body.

399 days ago
0
0
1 answers
1 asked
 
Will this fit in my classic army m110
Will this fit in my classic army m110

556 days ago
Mason W
0
0

(I have this same question)
Staff Answer:
It should. The m110 has a version 2 gearbox so it should drop in. Some modification may be needed.

447 days ago
0
0
1 answers
1 asked
 
Will this fit in my classic army m110
Will this fit in my classic army m110

556 days ago
Mason W
0
0

(I have this same question)
Staff Answer:
It should, the m110 has a standard v2 gearbox so it should drop in. However, modification may be required.

447 days ago
0
0
1 answers
1 asked
 
Will this fit in my classic army m110
Will this fit in my classic army m110

556 days ago
Mason W
0
0

(I have this same question)
Staff Answer:
It should. The m110 has a version 2 gearbox so it should drop in. Some modification may be needed.

447 days ago
0
0
1 answers
1 asked
 
Will this fit in my classic army m110
Will this fit in my classic army m110

556 days ago
Mason W
0
0

(I have this same question)
Staff Answer:
It should. The m110 has a version 2 gearbox so it should drop in. Some modification may be needed.

447 days ago
0
0
1 answers
1 asked
 
Will this fit in my classic army m110
Will this fit in my classic army m110

556 days ago
Mason W
0
0

(I have this same question)
Staff Answer:
It should. The m110 has a version 2 gearbox so it should drop in. Some modification may be needed.

447 days ago
0
0
1 answers
1 asked
 
Will this fit in my classic army m110
Will this fit in my classic army m110

556 days ago
Mason W
0
0

(I have this same question)
Staff Answer:
It should. The m110 has a version 2 gearbox so it should drop in. Some modification may be needed.

447 days ago
0
0
1 answers
1 asked
 
Will this fit in my classic army m110
Will this fit in my classic army m110

556 days ago
Mason W
0
0

(I have this same question)
Staff Answer:
It should. The m110 has a version 2 gearbox so it should drop in. Some modification may be needed.

447 days ago
0
0
1 answers
1 asked
 
Will this fit in my classic army m110
Will this fit in my classic army m110

556 days ago
Mason W
0
0

(I have this same question)
Staff Answer:
It should. The m110 has a version 2 gearbox so it should drop in. Some modification may be needed.

447 days ago
0
0
1 answers
1 asked
 
Nozzle?
What nozzle comes with this drop in?

593 days ago
Cameron R
0
0

(I have this same question)
Staff Answer:
Standard Blue Nozzle

436 days ago
0
0
1 answers
1 asked
 
Nozzle
What nozzle comes with this polarstar?

594 days ago
Cameron R
0
0

(I have this same question)
Staff Answer:
Standard Blue

436 days ago
0
0
1 answers
1 asked
 
Nozzle
What nozzle comes with this polarstar?

594 days ago
Cameron R
0
0

(I have this same question)
Staff Answer:
Standard Blue

436 days ago
0
0
1 answers
1 asked
 
Echo 1 Sob mp5
Would this gearbox fit in the full size Echo 1 SOB swordfish?

747 days ago
Bryan R
0
0

(I have this same question)
Staff Answer:
That fusion engine is meant for version 2 bodies such as m4's.

408 days ago
0
0
1 answers
1 asked
 
will this fit a vfc scar h 0 answers
2 asked
 
Will this fit COLT Full Metal M4 CQB-R Airsoft AEG Rifle 0 answers
1 asked
 
rate of fire 0 answers
1 asked
 
GR-25 0 answers
3 asked
 
Can this engine fit a G&G R8-L?
Can the engine fit?

1501 days ago
Michael V
0
0

(I have this same question)
Staff Answer:
Yes.

1447 days ago
0
0
1 answers
1 asked
 
FPS?
Will the standerd nozzle be able to range from 390 to 450 FPS if you chang the psi?

1512 days ago
justin p
0
0

(I have this same question)
Staff Answer:
No.

1507 days ago
0
0
1 answers
1 asked
 
VFC SCAR-L
How much would it cost to have you Install this in my gun?

1514 days ago
justin p
0
0

(I have this same question)
Staff Answer:
Contact our customer service for details

1514 days ago
0
0
1 answers
1 asked
 
Scar-L?
Will this fit in a classic army scar-l sports line?

1532 days ago
Reece R
0
0

(I have this same question)
Staff Answer:
It should

1528 days ago
0
0
1 answers
1 asked
 
Will this fit in a Krytac CRB without modification?
Will this fit in a Krytac CRB without modification?

1545 days ago
eric r
0
0

(I have this same question)
Staff Answer:
Yes, there should be no issue swapping these gearboxes.

1540 days ago
0
0
1 answers
1 asked
 
kwa sr7 devgru
Hello, I was wondering if the p* gen 3 v2 would fit in a kwa sr7 devgru. If the kwa body needs modding, can gi do that for you? thanks!

1604 days ago
Brian R
0
0

(I have this same question)
Staff Answer:
Please contact customer service for details on custom work

1604 days ago
0
0
1 answers
1 asked
 
g4a3
Will this fit g4a3 blowback version and are any other parts needed to go along with it? Thank you

1605 days ago
Raul g
0
0

(I have this same question)
Staff Answer:
It should fit

1604 days ago
0
0
1 answers
1 asked
 
I have a KWA M4 RIS will this fit and is it easy to do yourself?
I want to upgrade

1609 days ago
Frank V
0
0

(I have this same question)
Staff Answer:
Please contact our Customer Service for assistance

1609 days ago
0
0
1 answers
1 asked
 
kwa m16
Will this fit my 1st Gen KWA M16

1634 days ago
cristian G
0
0

(I have this same question)
It should fit due to the similarity of the upper and lower recievers

1542 days ago
Hayden R
0
0
1 answers
2 asked
 
is version 3 the version of polar star or the version gearbox it replaces?
if its the gearbox it replaces then it should be able to replace all similar gear boxes across all platforms.

1641 days ago
curtis w
0
0

(I have this same question)
Staff Answer:
Gen 3 does not refer to the gearbox style

1640 days ago
0
0
1 answers
1 asked
 
will this fit into the CA m15a1?
I have heard that the Classic army guns have different types of recievers...

1649 days ago
Andrew B
0
0

(I have this same question)
Staff Answer:
It should

1646 days ago
0
0
1 answers
1 asked
 
will this fit with a cyma upper and lower receiver 0 answers
1 asked
 
Will this fit in a KWA PTS RM4 ERG?
Will I lose ERG if installed?

1719 days ago
Noel N
0
0

(I have this same question)
Staff Answer:
Yes, you will lose the recoil function

1717 days ago
0
0
1 answers
1 asked
 
CA90
Will it fit in a classic army CA90?

1719 days ago
Cool G
0
0

(I have this same question)
Staff Answer:
No

1717 days ago
0
0
1 answers
1 asked
 
FPS
With the current nozzle what is the FPS range

1756 days ago
Patrick S
0
0

(I have this same question)
No FPS range, very precise, out of the box fps depends on the nozzle

1542 days ago
Hayden R
0
0
1 answers
1 asked
 
I know this is version 3 but could I have a version 2 custom made for a PTS Masada
I must know

1768 days ago
Trevor R
0
0

(I have this same question)
Staff Answer:
No, you need a version 3

1765 days ago
0
0
1 answers
1 asked
 
will this fit into a kwa sr10?
i am wondering this because kwa has a 2GX gearbox or something? idk please help

1777 days ago
Hunter F
1
0

(I have this same question)
The KWA SR10 is a basic m4 variant and will accept this engine

1542 days ago
Hayden R
0
0
1 answers
2 asked
 
will this fit in a Combat Machine MK18 MOD1 DST aeg ?
Will this Combat Machine MK18 MOD1 DST AEG Rifle Airsoft Gun ?

1792 days ago
chase k
0
0

(I have this same question)
Almost any M4 variant like the MK18 will fit this engine

1542 days ago
Hayden R
0
0
1 answers
1 asked
 
Fps?
Could I make the fps around 320?

1793 days ago
Elvis P
0
0

(I have this same question)
Staff Answer:
Yes it is possible with adjustment

1792 days ago
0
0
1 answers
1 asked
 
416
Will this fit in a Umarex H&K 416 CQB

1795 days ago
tony h
0
0

(I have this same question)
Staff Answer:
It should fit, however these is still a chance that modification may still be required

1793 days ago
0
0
1 answers
1 asked
 
will this fit in the Full Metal PTS Masada ACR SV AEG Airsoft Gun (Streamlined Version/Dark Earth)
will this fit in the Full Metal PTS Masada ACR SV AEG Airsoft Gun (Streamlined Version/Dark Earth)

1805 days ago
Patrick S
0
0

(I have this same question)
Staff Answer:
Not without heavy modification

1804 days ago
0
0
1 answers
1 asked
 
What battery is recommended to use with the FCU
What battery is recommended to use with the FCU

1811 days ago
Patrick S
0
0

(I have this same question)
Staff Answer:
7.4v Lipo with a JST connector.

1808 days ago
0
0
1 answers
1 asked
 
what non included components are requied to the polar star fuse engine
what non included components are required to the polar star fuse engine

1812 days ago
Patrick S
0
0

(I have this same question)
Staff Answer:
Well you need a complete gun without the gearbox as well as an air tank, regulator, and air.

1812 days ago
0
0
1 answers
1 asked
 
will this fit the fmg4?
i have the fmg4-1 (tan) and as you know its OEM by vfc. will a plat star fit in that?

1812 days ago
Shainee E
0
0

(I have this same question)
Staff Answer:
It should fit just fine if installed properly.

1812 days ago
0
0
1 answers
1 asked
 
will this work in the Echo 1 Full Metal Platinum Series M16A4 RIS AEG Airsoft Gun
I have this gun and want to convert it to a Polar Star but before I buy a $500 drop in replacement for the gearbox I want to make sure it fits

1824 days ago
Patrick S
0
0

(I have this same question)
Staff Answer:
Yes it will work if installed and tuned properly.

1822 days ago
0
0
1 answers
1 asked
 
where would the fcu go in a scar l vfc
how would you get the wire to the stock since it has the wireless system or would you drill a hole in the stock? I am probably gonna send my scar in for you guys to do it but i am curious and i wouldn't want to ruin the intagraty of the fusion engine

1849 days ago
Mike K
0
0

(I have this same question)
Staff Answer:
The FCU would most likely go in the stock.

1849 days ago
0
0
1 answers
1 asked
 
Can you build a gun out of this?
Im planing on building a m4. I saw this drop in gear box and thought that if I put this in a body then all that I need would be the tipical stuff like mags, stock, battery, barrel, and handle. Am I correct or will this not work for what im trying to do? I have never built a airsoft gun from scratch before so if some one can make a check list of stuff that I need to get to build my gun that would also help me out a lot. Thanks(:

1852 days ago
tristen r
0
0

(I have this same question)
Staff Answer:
This is not a gear box, it is an HPA system which uses an external air tank.

1850 days ago
0
0
1 answers
1 asked
 
Will this fit in a lancer tactical M4-S-system
Also if I bought this and the airsoft GI tune up/ repair service how would it cost all together?

1864 days ago
Caleb E
0
0

(I have this same question)
Almost any M4 Variant like the S-System will accept this engine

1542 days ago
Hayden R
0
0
1 answers
3 asked
 
I Have a vfc scar
Would you guys install if i sent in my gun when i order it

1867 days ago
Mike K
0
0

(I have this same question)
Staff Answer:
You would need to add the $45 tune up/repair service to the order

1867 days ago
0
0
1 answers
1 asked
 
Can the standard nozzle get down to 330 fps?
For Polar Star

1871 days ago
Julie S
0
0

(I have this same question)
Staff Answer:
You will need to match the nozzle for the FPS you are trying to achieve.

1870 days ago
0
0
1 answers
1 asked
 
SCAR?
I have a VFC SCAR-L STD and I was just wondering if this does fit in the gun?

1875 days ago
Aaron F
0
0

(I have this same question)
Staff Answer:
It should fit, you will most likely need a different nozzle however.

1875 days ago
0
0
1 answers
1 asked
 
Will this fit a miracle barrel?
Does it have to have an adapter or anything?

1885 days ago
Amanda A
0
0

(I have this same question)
Staff Answer:
The miracle attaches on to a hop up unit just like most M4 variant airsoft guns. Then the mechbox / lower receiver slides in.

1885 days ago
0
0
1 answers
1 asked
 
Will this fit in an echo 1?
I own an Echo 1 ST6 Daniel Defense MFR, (m4), and I was wondering if the polarstar fusion engine would be able to fit into this.

1894 days ago
Kurt S
0
0

(I have this same question)
Staff Answer:
This engine should be able to fit into most M4/M16 bodies.

1892 days ago
0
0
1 answers
1 asked
 
Will it fit into the g4 Troy hornet
Want to put the polar star into the fmg4-a2 Troy hornet

1910 days ago
Matt L
0
0

(I have this same question)
Staff Answer:
The specified products should be compatible.

1909 days ago
0
0
1 answers
1 asked
 
i have a G&G dmr will it fit
I have a G4A3 Dmr that i would like this engine in will it fit in will minimal fuss

1935 days ago
Maher A
0
0

(I have this same question)
Staff Answer:
They should fit without much work at all.

1933 days ago
0
0
1 answers
1 asked
 
which brands does this fit
i have a jg m4

1938 days ago
Chris W
0
0

(I have this same question)
Staff Answer:
VFC bodies work best for Polarstar Engines. The JG body may require modification to properly fit a Fusion Engine.

1937 days ago
0
0
1 answers
1 asked
 
What type of plug does the FCU use?
.

1950 days ago
Billy F
0
0

(I have this same question)
Staff Answer:
The FCU generally uses a JST connector.

1948 days ago
0
0
1 answers
1 asked
 
What's the difference in the generations? 0 answers
2 asked
 
Will This Fit in a G&P M4
I have a G&P Magoul M4 Metal Body. Will this fit into that without any modifications?

1974 days ago
Collin C
0
0

(I have this same question)
Staff Answer:
There should be very few fitment issues.

1974 days ago
0
0
1 answers
1 asked

Search Tags: Polar Star VFC upgrade mechbox mech box HPA High Pressure Air System Drop In Replacement Version 2
This product was added to our catalog on Tuesday 22 November, 2011.
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