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PolarStar Jack V3 HPA Unit | Standard FCU | V3 AK HPA Kit Reviews

4.6 Rating 7 Reviews
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“JACK” was designed to answer the demand for an affordable, high performance HPA conversion for AEG's. The system is a drop-in cylinder replacement that will be universally compatible with a wide range of gearbox versions that have center-line nozzles.
 
Similar to its sister product, the F1, it replaces the original gearbox components with a programmable pneumatic system allowing for higher performance and greater reliability over a gear driven system. Although economically priced, “JACK” will still retain the same performance and quality you have come to expect from PolarStar. “JACK” only has 1 moving part, the nozzle, that acts as its own poppet valve (similar to the Fusion Engine poppet) which is piloted by the solenoid. The system itself only has 6 parts and can be completely disassembled by hand, making the system very reliable and easy to maintain.
ROF: 30RPS+ The maximum cyclic rate of the Jack is affected by several factors, however, 30 rounds per second is a conservative number. Most configurations will exceed this easily. Air Efficiency: 1000 shots from 13/3000 @ 1.5J (80PSI w/ .28g) The JACK is extrememly efficient. The patent pending design of the F1 allows for the most direct air path to the nozzle with minimum dead volume resulting in better flow, faster response and less air used per shot. Using a stock VFC M4 as a test platform, the JACK was able to fire approximately 1000 rounds for a 13ci/3000psi cylinder before pressure dropped below regulated output.
Looking for an IGL Line for your Jack? Click Here:AMPED - IGL (For Wolverine SMP & PolarStar JACK)
 

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Shipped pretty fast considering a I bought it right before Christmas though I'm not sure if it's due to shipping a small plastic piece that holds the solenoid wire (I think that's what's it's called) was broke so I had to elect tape it. Also if anyone thinking of buying this I strongly recommend getting the ingrip line the one it came with was kinda wimpy overall pretty happy with it
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Posted 1 year ago
Looks sharp!
Posted 1 year ago
Came fast and was a great product
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Posted 2 years ago
Thank you Ethan! We love to hear it
Posted 2 years ago
Is the name of my lct ak with a polarstar jack. First hpa unit and I loved it. bought a second on the 3rd of feb for my first m4 build
1 Helpful Report
Posted 2 years ago
Used this bad boy on my cyma 74 spetsnaz and cant stay anything bad about it, installation was easy, customer service top notch, performance is superior. 5 Stars.
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Posted 6 years ago
Fast shipping and the kit was easy to install. Though I struggle with the V3 trigger for a bit as this was my first time messing with one. All in all a good store and fast shipping will keep me shopping here for some time to come
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Posted 7 years ago
Ok
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Posted 7 years ago
It came in time and was perfect.
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Posted 8 years ago