Echo AR II Trigger

The Echo Trigger allows the shooter to select from 3 different settings:

• Safe Mode: The Firearm will not fire.
• Semi-Automatic Mode: The Firearm fires when the trigger is pulled.
• Echo Mode: The Firearm fires when the trigger is pulled and also when the trigger is released.

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.

You will need a full-auto bolt carrier in your firearm for the Echo AR-II to function. The Echo AR-II is designed to function in the AR-15 Platform.

Requirements: 

• Mil-spec AR15 Lower Receiver
• Ensure the lower does not have a sear block or other non-mil-spec attributes
• Must have matching buffer assembly (Both carbine and rifle length will work, but must not be mismatched.
• Ensure the buffer is not solid, sand, or a captured spring.
• Must have a full-auto bolt M16 cut.

Recommendations: 

• H buffer – Ensure that when you shake the buffer, it rattles. Occasionally, an H2 Buffer may be required for the Firearm to fire properly.
• Some lower receivers have a sear block or wall; the sear wall will prevent the trigger from functioning as designed.  The wall of extra material causes the trigger lock to remain compressed forward and can cause improper fitment of the selector switches.
• Large trigger pin lower receivers are not compatible. The Echo ARII Trigger uses standard trigger pins. You are welcome to use anti-walk pins if you would like.
• Most Carbon Fiber or Polymer Lowers have extra supports. Extra supports that get in the way of the trigger pack are not compatible.
• Some lower receivers may use a set screw, the set screw will need to be removed, as it impedes on the trigger causing improper function.

PRODUCT DETAILS:

• PATENTED Design that gained ATF Approval (Patent # US 8,820,211 B1)
• PATENTED Technology licensed through Franklin Armory inside the Fostech Echo 2, including U.S. Pat. Nos. 9,952,012 and 9,952,013.
• Technology licensed through HIPERFIRE inside the Echo Trigger
• Light, clean, and crisp pull in Semi-Automatic Mode
• The Echo Trigger is packed full of cutting-edge technology
• Reliable function in Echo Mode