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Feb 10, 2026 - 10:07 AM
We’ve provided several answers to questions related to PolarStar Jack V3 HPA Unit | Standard FCU | V3 AK HPA Kit , see some other helpful Q&A related to this product.
Question: Is this compatible with VFC M4 airsoft guns?
Answer: Yes, the PolarStar Jack V3 has been tested with a stock VFC M4 as a platform for air efficiency, showing excellent performance. Compatibility with popular brands like VFC ensures a wider user base can benefit from this system.
Question: would this work well with the ump elite without modifications for the trigger
Answer: That should work, not sure about trigger modification tho. You would need the Jack nozzle #15 as well.
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