best ar-15 binary trigger/fostech echo sport binary trigger for ar-15 review/fostech echo sport binary trigger for ar-15 install/fostech echo binary trigger review/can you put a binary trigger on a ar pistol/are binary triggers legal in arkansas/fostech outdoors echo ar-ii drop-in binary ar-15 trigger/fostech echo sport binary trigger for ar-15 for sale/ cheap fostech echo sport binary trigger for ar-15/cheapest binary trigger/binary trigger price/cheap binary trigger/best binary trigger
The Echo AR II Trigger from FosTech Outdoors is an ATF–approved rifle trigger built specifically for AR 15 platform weapons. These Rifle Triggers feature an innovative drop-in design for easy installation, and deliver crisp, light pulls while in semi-auto mode. Overall, the Fostech Echo Trigger has 3 different modes: safe (firearm will not fire), semi-auto (gun fires when trigger is pulled), and echo (weapon fires when trigger is pulled and released). These drop–in AR 15 triggers require a full-auto bolt carrier to function properly, and bolt carriers are not included with purchase.