PolarStar Fusion Engine MP5 Nozzle (Blue).

The PolarStar FE nozzles allows you shift the velocity range of your rifle up or down to best meet your requirements. Nozzles are easy to install and typically take less than 5 minutes to change out on most models from start to finish.

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.

FPS results with a .20g BB using a 6.05mm barrel at 120psi: