The FosTech Outdoors Echo AR II Trigger for AR-15 platforms offers three selectable firing modes: Safe Mode, which prevents the firearm from firing; Semi-Automatic Mode, which fires one round per trigger pull; and Echo Mode, which fires on both the trigger pull and trigger release.
Safety is engineered into every aspect of the Echo AR II Trigger design. When operating in Echo Mode, if a target moves after the initial trigger pull, the shooter can move the selector to the safe position to prevent the second round from firing upon release.
The Echo AR II Trigger features PATENTED design that received ATF Approval (Patent # US 8820211 B1) and incorporates PATENTED Technology licensed through Franklin Armory (U.S. Pat. Nos. 9952012 and 9952013). Technology licensed through HIPERFIRE is also integrated into this trigger. The design delivers a light, clean, and crisp pull in Semi-Automatic Mode while maintaining reliable function in Echo Mode.






