What gearbox versions is this product compatible with?
PolarStar Jack V3 HPA Unit | Standard FCU | V3 AK HPA Kit
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Open Feb 10, 2026 - 10:07 AM
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Answer
Feb 10, 2026 - 10:07 AM
The polarstar jack v3 is universally compatible with a wide range of gearbox versions that have center-line nozzles. This compatibility with multiple gearbox types allows more users to upgrade their existing airsoft guns without needing special parts.
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PolarStar Jack V3 HPA Unit | Standard FCU | V3 AK HPA Kit
“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 F...
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