PolarStar Solenoid Valve Trigger Drop in compatibility with most

Drop in compatibility with most popular Tokyo Marui spec M4 series Airsoft AEG rifles

easy-to-read gauge shows your exact air level at all times

Heavy weight H&K licensed hicap magazine included

Inspired by the darkest realms of imagination

Custom recoil stop bolts design

PolarStar Solenoid Valve Trigger Drop in compatibility with mostReplacement solenoid valves for PolarStar HPA systems. Select the correct valve for your system the Fusion Engine uses a different solenoid than the JACK and F2. Fusion Engine R107 (200 PSI): Direct replacement for all Fusion Engine models JACK F2 BV309A Bullet Valve (200 PSI): Replacement for JACK and F2 systems