Someone was asking recently when an electric gun would first be produced, as opposed to being powered by springs, compressed air or explosives. Here you go.
https://youtu.be/eAHKS0nVlL4
https://youtu.be/eAHKS0nVlL4
Now there's no way to know about who made which one first in the prototyping phase but you should check out this: https://e-shotgun.com/
Was featured on Demo Ranch as what appeared nearly production ready. I reached out to them - along with probably thousands others to see about availability. They actually responded and I'm in line as they are trying to bring it to retail production.
edit: I have to update myself now. It's actually in pre-order. This one is real boys!
https://shop.northshoresportsclub.com/product/coil-gun-down-payment-for-the-june-2022-shipment