May 23, 2018 · The Echo Trigger is designed with safety being the utmost priority. When the shooter is in the Echo Mode and depresses the trigger one round is fired, if the target moves, the shooter can move the selector to the safe position and a second round will not fire upon release. The echo trigger has several distinct features May 12, 2020 · Once you get the safety selector out of the lower receiver the trigger pack just lifts out in one piece. Take the lower receiver off your HK by popping out a few pins, rotate your selector switch to the vertical, pull your selector out the side of the receiver, and your factory trigger pack will come right out of the lower receiver.
Additionally, the first generation Echo trigger and the Echo II use the safety selector to switch between safety, semi-auto mode, and Echo mode. The Echo Sport Trigger has a paddle style selector attached to the front of the trigger, inside the trigger guard. Rotate the selector to the left for Echo mode, and to the right for semi-auto mode.