FosTech Outdoors Echo Sport Trigger for AR-15

Echo Sport Trigger Features The Echo Sport from Fostech is a more economical version of their world-famous Echo II rapid-fire trigger system for the AR-15. It has all the functionality of the Echo II trigger with the only difference being that you select the Echo mode from a paddle located in front of the trigger rather than through the use of the safety selector. The advantage of the Echo Sport trigger is that it provides the same binary (fire on pull and release) trigger function as the ori