Upgrade your Echo1 AMD-65 or AK with Polar Star’s new Version 3 GEN 3 Fusion engine. Now with an on-board computer called the FCU (Fire Control Unit) you can now adjust the air nozzle timing and cyclic rate. With many new features the FEV3 is not only limited to AK series Airsoft guns but more. With new user friendly electronics, you have the ability to put the FCU in sleep mode, monitor your lipo battery, plug-n-play harness for easy installation and an auto switch for users to select from semi auto and full auto positions. Check Polar Star’s website for more information on how to add this cool fusion engine on your Echo1 AK.
Product Page: RedStar AMD-65 By Echo1