This PolarStar Fusion Engine Gold Nozzle allows you to regulate your maximum FPS output based on your barrel.
FPS Range: 350-400 FPS
Complete Nozzle Chart: Click Here
Types of Nozzles Available: AK, G36, M240, SCAR-H, M4
The following is a diagram showing the approximate FPS output of the gold nozzle corresponding to each of the following barrel lengths with .20g BBs at max input pressure 120PSI based on a stock barrel.
275mm will yield ~350FPS
375mm will yield ~366FPS
509mm will yield ~400FPS
Disclaimer: Actual FPS results will be determined by your specific build. Shorter & Larger Bore Barrels will have lower FPS than Longer & Smaller Bore Barrels.