Would this work in a umarex ump
PolarStar Jack V3 HPA Unit | Standard FCU | V3 AK HPA Kit
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Open May 08, 2023 - 11:29 PM
1answer
Answer
Jul 29, 2017 - 10:21 PM
Sure will! You will need an ump nozzle though. We have the #15 nozzle arriving in the next couple days from p*. We will place it on our website asap!
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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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