DIY weapons are fun to work on and, even more, fun to play with, provided you've put them together properly.

What makes them even better is that most of them are completely legal, provided you haven't used them to try and kill anyone. To learn some surprising facts about DIY weapons, watch the video below.

Who would have thought that making your own guns was entirely legal? I know what my next major project is going to be.

What makes this video so useful is that it proves just how innovation and a little know-how can be useful to overcome any obstacle. Just because you haven't prepared by stocking up on arms and ammunition before the fall doesn't mean you'll have to go unarmed when SHTF.