Preacher,
You got what you got. Only trigger time can say if it was a good buy or not. However one of the advantages of the AR is it's modularity, if a part is bad, we can replace it with a better one. But don't worry about that for now. First things first, read the manual a couple times, goggle Pat Roger's article on M4/M16 maintenance read that a couple times. There is alot of bad data on AR maintenance out there and Pat does a very good job of debunking some of the bigs ones. Once you have done that, find a friend who has some experience/training with ARs and have them walk you through field stripping, reassembly and functions check. While you have the gun apart do a good inspection, you probably don't know what you are looking at yet, but if there is something wrong you or your buddy might notice it. Plus it start to get you familiar with the rifle. Then oil it up and take it to the range. I noticed that you mentioned reloading, I reload too, but I would tell you start with factory ammo. You don't want to be sitting there thinking you have a new gun problem when it's your handloads. There are some nuances to reloading for ARs. I am not going to go into here, but there is more info in the reloading forumn. Speaking of ammo get both .223 and 5.56 (there is a differnce) and try them out. Observe the groupings, operation of the rifle and the ejection pattern, also collect your spent casing and check them out. Seperate the spent 5.56 from the .223 or you might break a deprimer later. Post up a range report when you are done with any questions you have.

