Rubber band machine guns Posted on Thursday, March 13th, 2014 at 5:25 pm. PT Written by Dave Mark I really want one of these, but I don’t want to have bought one. Do they not look awesome? SV650 Saw one of these last week. Made by a local gadget guy. He called his an elastic band Gatling gun. It WAS pretty neat. I thing he said it can discharge 70 elastics per minute. He was very proud of his handiwork.