I have an EE degree. Trigger bounce is a real thing.

But it's not an EE thing, it has to do with a firearm malfunctioning in a way such that a normally semi-automatic firearm fires more than once per trigger press, due to some internals on the trigger that I'm forgetting about / don't know about.

Now that I put my EE hat on though, there is a significant parallel to "switch bounce", which is an EE thing.

Assuming it's the same thing as hammer follow, it's usually caused by a worn disconnector or hammer.

The disconnector prevents the hammer from moving forward until the trigger is pressed again (semi-auto) or the gun is in battery (full auto, closed bolt). I suspect open-bolt guns don't have one, but I've never looked at the trigger group of an open-bolt gun so can't be sure.