Polarstar F2 HPA Engine for Airsoft Rifles

Features Extremely lightweight and compact design Dual solenoid design allows for open and closed bolt firing F2 FCU with LCD allows for easy tuning Spring-loaded nozzle provides consistent loading force A lightweight one piece poppet valve can operate at lower pressures Easily adjustable FPS can be used for both CQB and field use without having to change nozzles F2 is essentially a Mini Fusion Engine. It offers the same adjustability and performance as the Fusion Engine in a cylinder-sized package.Patented Dual Solenoid Design: The dual solenoid design of the F2 provides the same functionality as the legendary Fusion Engine but in a more compact, efficient, and flexible design. Dual solenoids allow for the nozzle and the poppet valve to be adjusted independently of each other for unparalleled control over both the loading time and air volume used. Additionally, this makes it possible to change the firing sequence giving it the ability to operate in both true closed bolt as well as "