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Oct 30, 2025 - 10:05 AM
We’ve provided several answers to questions related to PolarStar Jack M249 HPA Unit | Standard FCU | M249 HPA Kit , see some other helpful Q&A related to this product.
Question: What type of system replaces the original gearbox components in this unit?
Answer: The Polarstar Jack M249 replaces the original gearbox components with a programmable pneumatic system, allowing for customization, tuning, and offering higher performance and reliability compared to traditional gear-driven systems.
Question: I'm looking for a unit for my a&k mk60. Will this work for it?
Answer: Yes and I believe you will need Nozzle #14: https://polarstarairsoft.com/pages/he...
Jack nozzles: https://ampedairsoft.com/polarstar-ja...
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