Banned by YT, this video was one of my favorites to make.
The ECHO trigger allows your selector to have a third positions and fire in the "ECHO" mode-
Safe Mode: Firearm will not fire. Semi-Automatic Mode: Firearm fires when trigger is pulled. Echo Mode: Firearm fires when trigger is pulled and also when trigger is released.
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***This is an older video and at the time the original version needed a modified bolt carrier (which it came with) to function properly. The current version has been changed and will work with any standard FA bolt carrier, which is not included.
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