Of course it can be done, but I think you fail to realize that something the size of a dinner plate travelling upwards of 50mph in the sky is going to be a whol

Of course it can be done, but I think you fail to realize that something the size of a dinner plate travelling upwards of 50mph in the sky is going to be a whole hell of a lot harder to shoot than say a clay pigeon. I say this as someone who built and flies a quad-rotor UAV (look up the QAV400 frame for an idea) and used to fly the Shadow 200 in the military (with 480 combat flight hours over Iraq). I'm not saying you can't shoot these things down, but people that think it will be easy have a lot to learn about this technology. Also, when people shoot up in the air, there are often unintended victims when the bullets come down.