Polarstar Fire Control Unit, Rev. 3, Universal Flashhiders and Outer Barrels the very first fully mechanical

the very first fully mechanical

1v with a mosfet before ordering this

UpgradeableBattery: 7

LiPO Ready: Yes

Compatible when used with the Valken SMG Magazine Adapter

Polarstar Fire Control Unit, Rev. 3, Universal Flashhiders and Outer Barrels the very first fully mechanicalThe REV3 FCU follows the classic design of our very first FCU and it is considered to be the finest fire control units on the market. Since it is equipped with an LCD screen and joystick you are able to easily scroll through menus and precisely adjust settings for the utmost control over the system. This FCU is also universally compatible with all PolarStar HPA systems including both dual and single solenoid systems. This latest REV3 model features