I am a Soldier and have been firing the M16 for a few years. I am finally interested in buying something similar to have for various reasons. I feel comfortable firing and maintaining it. I did some google searching, but I was not satisfied with my results, so I was hoping some OTers could set me straight. I live in PA, what kind of steps do I need to take to legally own an AR15 or similar? I am interested in a smaller version, similar to the M4. Of course, I would like to spend as little money as possible, but I want to make sure the weapon I end up purchasing isn't a complete piece of shit. Where should I look, what do you guys recommend? I am a noob when it comes to the civilian world and guns. I have had a couple of military M16s over the last few years, but they spent the majority of their time in the arms room until I had a reason to use it. Thanks in advance!