PolarStar JACK

Big performance in a small package.

What is JACK?

The patent pending JACK™ system was designed to answer the demand for an affordable, high performance HPA (High Pressure Air) conversion for AEG's. The system is a drop-in cylinder replacement that is 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™ still retains the same performance and quality you have come to expect from PolarStar products.

Switchboard are already available or in production for a wide range of models with even more on the way, including:

  • Version 2
  • Version 3
  • ARES Amoeba
  • Elite Force HK417
  • Elite Force Tavor (S&T)
  • ARES V2/V3
  • Plugboards for machine guns or custom installs

Velocity Range: 300fps - 500fps

Operating Presure: 40-130 PSI

Compatibility: ALL AEG

  • Three FCU Options: Standard, Mini & Bluetooth (Coming Soon)
  • Wire harnesses are available in 7.5", 13" and 18" standard lengths
  • Custom nozzle lengths available.
  • Low velocity nozzles (< 1J) available.
  • What is the difference between F1 and JACK?

    Both F1 and JACK are "open bolt" systems, meaning the nozzle is in the rearward position when the system is idle. Aside from F1 supporting offset nozzles (while JACK does not), the difference is how they fire.

    JACK uses a small solenoid for nozzle movement only. The position of the nozzle within JACK is what allows or prevents air from flowing down the nozzle. Like JACK, the solenoid in F1 also controls nozzle movement and the nozzle position also controls firing air, but only for one of the two firing stages. In the two-stage system the nozzle travels a certain distance, then begins to allow airflow through the bore. After traveling completely a secondary firing port opens to allow increased flow through the solenoid itself. These internal differences result in F1 being slightly more efficient than JACK.

    In addition to performance specs there are also some differences in compatibility. While F1 supports almost any AEG gearbox (offset nozzle or centerline nozzle), JACK is limited to gearboxes with a centered nozzle.

Over 20 standard JACK nozzles are available for installation into a wide range of replicas. These are numbered, rather than named, since a single nozzle is often compatible with multiple replicas. The "Original Model" listed in the table is the replica from which the nozzle measurements were taken and is for reference.


If your gun is not listed in our Compatiblity Database a recommended nozzle length may calculated by measuring your original gearbox and applying the following formula: TIP = F + B - (A/2) - .0875. A more precise measurement (which accounts for the hopup and bucking in use) may be obtained by installing a nozzle into the system which is slightly too long for the replica and measuring the nozzle setback when placed into the hopup.


If you do not see a Standard Nozzle listed within +/- .010" of the calculated measurement please contact us with your gearbox measurements and we can cut a custom nozzle for you.


19
XCR, ECHO 1 (VFC)
1.227
2.079
9
TAVOR COMPETITION, EF (S&T)
0.8765
1.729
4
SR-25, G&G
1.4505
2.303
5
SR-25, A&K
0.9635
1.816
8
SCAR-H, VFC
1.5075
2.36
18
MP5, G&G (BLOWBACK)
0.795
1.647
2
MP5-A4 TFB, ECHO 1 (CYMA)
0.8625
1.715
14
Mk43 (M60), A&K
1.3895
2.242
7
MASADA, PTS
1.1345
1.987
13
MASADA, A&K
1.3465
2.199
1
M4, VFC
0.8245
1.677
3
M249, CLASSIC ARMY
0.8095
1.662
6
M240B, ECHO 1
0.8945
1.747
11
KAC LMG, CLASSIC ARMY
0.7475
1.6
15
G36KV, EF (ARES)
1.0545
1.907
20
G36K, CLASSIC ARMY
1.026
1.8785
16
G36C, EF (S&T)
1.0415
1.894
17
AUG, CLASSIC ARMY
1.0045
1.857
10
ARX160 ELITE, EF
1.4865
2.339
12
AK, LCT
0.8355
1.688

About Us

PolarStar Airsoft was formed in 2009 as a part of PolarStar Engineering & Machine with the goal of bringing our engineering experience and focus on quality to airsoft. Since then, PolarStar has made innovative airsoft products of the highest quality, designed and manufactured in the USA.

PolarStar products, including the patented Fusion Engine are designed by airsoft players, incorporating airsoft experience with the feedback of the commnity.

Latest News

PolarStar F1Posted 2016-05-13
HPA Speed TriggerPosted 2016-06-23

Address

PolarStar Airsoft
5 Garfield Way
Newark, DE 19713
P: (302) 449-4866