![Polarstar FCU - Fire Control Unit, Rev. 3, Universal Condition:New [Parameter]2S & 3S Lipo Battery](https://cdn.shopify.com/s/files/1/0741/5355/8050/files/ChatGPT_Image_May_14_2026_01_26_43_AM_3.png?v=1778788032)
Pay in 4 interest-free payments of $20.25 Learn more
Ships within 48 hours · Estimated delivery Aug 13 - Aug 18
[Parameter]2S & 3S Lipo Battery Charger
Custom fabricated selector switch
1v Buffer Tube LiPo Recommended (Wired to rear w/ Deans Connector)”
System: Gas Blowback
Fully assembled & KA Tech–tuned HPA rifle
Polarstar FCU - Fire Control Unit, Rev. 3, Universal Condition:New [Parameter]2S & 3S Lipo BatteryAn FCU (Fire Control Unit) is needed for all Polarstar rifles with the acception of the Polarstar Kythera. If buying this with a Polarstar rifle from KA Tech Airsoft it will come pre tuned for that specific rifle. If your buying this as a solo product and you would like it tuned for your rifle please fill out the contact form or leave a comment giving the following details, the more specific the better Which Polarstar Engine Ex. Polarstar Jack Hopup
