Fostech Echo AR II Binary Trigger – AR-15 – AR15

This is a no reserve penny auction for a Fostech Echo AR II binary trigger. The trigger is in the factory packaging and appears to be in good condition. Turn your AR into a rapid-fire machine. The Echo AR II lets you fire on pull and release—crazy fast, totally legal. Drop-in ready, smooth as hell, and built to run hard. Safe, semi, or binary—your call. This isn’t just a trigger—it’s a flex.