Is this a PolarStar Jack 1.0 or 1.1
PolarStar Jack M249 HPA Unit | Standard FCU | M249 HPA Kit
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Open May 08, 2023 - 11:29 PM
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Jul 01, 2021 - 05:29 PM
They are all 1.1 now
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PolarStar Jack M249 HPA Unit | Standard FCU | M249 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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