Fostech Echo Trigger, binary trigger, AR-15 rapid fire, Echo AR-II, firearm upgrade, binary firing mode, trigger enhancement, AR-15 accessories, shooting performance, tactical shooting

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Fostech Echo AR-II Trigger

Rifle

Unlock lightning-fast semi-automatic and binary firing performance with the Fostech Echo AR-II Trigger for AR-15, engineered for precision, reliability, and legal compliance.

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