Polarstar FCU (Fire Control Unit) Rev.3 Slide Catches Not only is it tough

Not only is it tough

Injection moulded for strength

The CNC Aluminium Short Stroke Buffer is a combination of aluminium

Still uses bullet proof direct solenoid fired design

Polarstar FCU (Fire Control Unit) Rev.3 Slide Catches Not only is it toughThe 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