Jack Polarstar Engine
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The JACK™ 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 products, the JACK™ 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, the JACK™ still retains the same performance and quality you have come to expect from PolarStar products.
The JACK™ has only one moving part, the nozzle, which acts as its own poppet valve. Similar to the Fusion Engine™ and F2™ poppet, the nozzle is only piloted by the solenoid to open air flow through the poppet with none of the firing air coming from the solenoid itself. This design lets the JACK™ send a higher flow of air down the barrel than systems that only use a solenoid as the firing valve.
Gel Blaster Compatible
JACK HPA conversion kits can also be configured for use in gel blasters.
Please contact us for information on ordering JACK systems for gel blaster use.
| Velocity: 500fps w/ .20g @ 130psi |
| The JACK™ allows for easy velocity adjustment by changing input pressure and does not require different nozzles to reach its full velocity range. Using a standard M4 as an example, velocity can be adjusted from below 280fps and up to approximately 500fps with a .20g BB. Velocity can vary per model as longer barrels will increase the maximum velocity while shorter barrels will decrease it. |
| ROF: 30rps |
| The maximum cyclic rate of the JACK™ is affected by several factors such as the operating pressure as well as quality of the magazine and BB's used. However, 30 rounds per second is achievable in most standard configurations. |
| Air Efficiency: 1000+ shots from 13/3000 @ 1.5J w/ .28g |
| Although not a critical requirement during development, JACK™ does boast some highly respectable figures in this category. This is made possible by its intelligently laid out design which minimizes dead volume resulting in better air flow, faster response and less air used per shot. |
| (Test Configuration: 6.05x375mm Barrel) |
Delivery times vary according to the region and the type of courier, usually from 4/5 working days. All our products are covered by warranty and customer support that will follow you in case of any need.
OVERVIEW
Our refund policy and return lasts 15 days. If 15 days have passed since your purchase, we cannot offer you a full refund or exchange. To be eligible for a return, your item must be unused and in the same condition you received it. It must also be in the original packaging. To complete the return, we require a receipt or proof of purchase. Please do not return your purchase to the manufacturer.
REFUNDS
Once your return has been received and inspected, we will send you an email to let you know that we have received your returned item. We will also notify you when your refund has been approved or denied. If you are approved, your refund will be processed and a credit will automatically be applied to your credit card or original payment method, within a certain number of days.
LATE REFUNDS OR MISSING
If you have not yet received a refund, please check your bank account again. Then contact your credit card company, it may take some time for your refund to be officially posted. Then contact your bank. There is often some processing time before a refund is posted. If you have done all of this and still have not received your refund, please contact us at {email address}.
ITEMS ON SALE
Only regular priced items can be refunded. Sale items cannot be refunded.
SHIPPING AND RETURNS
You will be responsible for paying your own shipping costs for returning your item. Shipping costs are not refundable. If you receive a refund, the cost of return shipping will be deducted from your refund. Depending on where you live, the time it takes for your exchanged product to reach you may vary. If you are returning more expensive items, you may want to consider using a trackable shipping service or purchasing shipping insurance. We do not guarantee that we will receive the returned item.