- Designed and manufactured in the USA

NOTE: Do not use on soft guns

- Special Geometric pressure surface provides better hopup and increases precision

The more technical part includes a 6

PolarStar F2 M249, Standard FCU lader - Designed and manufactured inThe Polarstar F2 is in theory a Mini Fusion Engine. It offers the same adjustment setting options and performance as the Fusion Engine in a cylinder size. The F2's dual solenoid design provides the same functionality as the legendary Fusion Engine , but in a more compact design. Dual solenoids allow the nozzle and poppet valve to be adjusted independently of each other (just like a Fusion Engine ). This allows you to fine tune your unit to your exact