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The Polar Star FPS Adjustment Air Nozzle for your fusion engine allows you to adjust the muzzle velocity of your 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 youre ready to play.
Manufacturer: Polar Star
Package Includes: Air nozzle ONLY
Each nozzle is machined from aluminum and comes with both the internal and external o-rings. The nozzles are color coded with a hard coat anodizing for easy identification.
Results with a .20g BB using a 6.05mm barrel at 120psi.
CQB (275mm) = 313fps, Carbine (380mm) = 325fps, Rifle (509mm) = 363fps
CQB (275mm) = 350fps, Carbine (380mm) = 366fps, Rifle (509mm) = 400fps
CQB (275mm) = 380fps, Carbine (380mm) = 405fps, Rifle (509mm) = 435fps
CQB (275mm) = 423fps, Carbine (380mm) = 457fps, Rifle (509mm) = 476fps
CQB (275mm) = 446fps, Carbine (380mm) = 494fps, Rifle (509mm) = 514fps
CQB (275mm) = 500fps, Carbine (380mm) = 550fps, Rifle (509mm) = 590fps
(The power range can change per the rifles barrel length and bore size so results may vary.) - See more at: http://polarstarairsoft.com/products/fusion-engine-nozzles/fusion-engine-m4-m16-nozzle-red.html#sthash.s0T92vvX.dpuf