I'm in the process of my first teardown-build also. Never had an AR before, nor am I a gunsmith. But common sense tells me, it's just pins and nuts and bolts and pieces of metal and plastic. And not that many of them :) I ordered an "AR tool kit" from Amazon for 50some bucks, probably a total waste of money, but whatever. It has the barrel nut wrench and a set of (probably crappy) punches and some other nonsense, like a mat with a parts diagram. I didn't bother with the vice clamp, two soft pieces of wood work just fine. If I were you, I'd probably just order a decent barrel nut wrench for 20-30 bucks, then go to a hardware store and get a set of quality punches. Or just use old drill bits, at least you know they are hard enough not to bend. If you get into some cutting/grinding, I hacked off my front sight with a 20 dollar black and decker rotary tool I got at target. It works every bit as well as a dremel. I have some pics posted in a different thread, if it helps.