The Fostech Echo AR II binary trigger is a drop-in fire control upgrade for the AR-15 platform. It is built to fire one round on the trigger pull and another on the release, providing a faster cadence without requiring a proprietary bolt carrier.
Key Features
Binary trigger operation: one shot on pull, one shot on release
AR-15 platform drop-in replacement for standard fire control group components
No proprietary bolt carrier required for installation and function
Designed for fast, responsive trigger control
Upgrade your AR-15 trigger feel with the Fostech Echo AR II binary system and enjoy rapid follow-up shots with pull-and-release operation.
