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Genuine Polarstar – Made in the USA
AEG HPA conversions are a huge advantage… They have a faster response, ninja silent operation, and the best reliability you will find.
Polarstar designed the Jack system to be an affordable, high performance HPA conversion kit for Airsoft Electric Guns! With some quirky features…
The Jack is a True Blow forward, open bolt system for ultimate efficiency, and solid consistency
Capable of a whopping 500 FPS with .20g B.B running 130 PSI!
Most standard configurations with Jack are capable of reaching 30 RPS
Battery & male nipple hose fitting not included, sold separately
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