Fostech echo trigger AR-II for AR-15 Binary trigger
Ships from warehouse please allow extra 5 days processing
the Echo Trigger is a revolutionary new pull and release trigger from FosTecH. The Echo Trigger is a groundbreaking drop in design that is approved by the ATF. The Echo Trigger allows the shooter to select from 3 different settings: Safe Mode: Firearm will not fire. Semi-Automatic Mode: Firearm fires when the trigger is pulled. Echo Mode: Firearm fires when the trigger is pulled and also when the trigger is released.