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Jan 12, 2026 - 08:35 AM
The green polarstar nozzle achieves 363fps with a 509mm barrel. Longer barrels generally provide higher FPS, which is valuable for increased range and accuracy.
What is the velocity output of the green nozzle with a 509mm barrel? PolarStar Fusion Engine Nozzle for M4 | Black, Blue, and Silver
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Open Jan 12, 2026 - 08:35 AM
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PolarStar Fusion Engine Nozzle for M4 | Black, Blue, and Silver
The air nozzles for the Fusion Engine come in up to 6 different colors which identify how much the nozzle restricts air flow out of the engine. This starts at the Green nozzle which has the most restrictive bore with the least amount of flow, and goes up in increments to the Red nozzle which is the ...
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