The PolarStar FPS Adjustment Air Nozzle for PR-15 allows you to adjust the muzzle velocity of your PR-15 electro-pneumatic airsoft gun with just a very simple modification. Simply choose the fps range that you are looking for (see the chart below), and drop-in the corresponding air nozzle, and you're ready to play.
Package Includes: Air nozzle ONLY
Allows the player to quickly and easily adjust muzzle velocity
Certain fields only allow airsoft guns with certain muzzle velocities to be used, so be sure to find out the exact FPS range you are looking for before ordering.
For: Polar Star FPS Adjustment Air Nozzle for PR-15 (Red - Upgrade Stage3)
I have found that the lower inner barrel length the more fps you use for example i run a madbull 229mm inner barrel at 6.0 diameter and with a blue nozzle at 120psi im only achieving 260 fps with a .20g bb so in order to get the target fps i was looking for was 300 with a .25 i had to buy two different nozzles so just keep that in mind when you buy nozzles i just wish i knew that before i ordered my engine so i could at least buy all the nozzles with it just a heads up but other than that it works fantastic :) very pleased with my polarstar
Drops right in dont have to remove the entire fusion engine to swap out nozzles
Barrel length affects your fps tremendously even with the poppet dwell high
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