Algodoo

I'd say this is "mehkay." it's not remarkable, doesn't illustrate the mechanism all that correctly, and it's finicky to use. And it really doesn't do much. A trigger moving out of the way of a hammer that strikes a firing pin is simple. People might want to know how the disconnector works, how their rifle stays "cocked" after each shot if the trigger is held, even though pulling the trigger just before caused it to fire. besides, there's plenty around here to demonstrate everything from the simplest disconnectors to the fanciest burst cams. I'd be much more interested in seeing an innovative concept instead of different repetitions of the same mechanism. I'll give it an 8, because it at least functions.