I am looking to build an AR 15 here over some time and i want to build it cheap but i need to know what are the absolutely necessary parts. Does anyone have or know of an entire parts list to build an AR15. Or is there a kit that will give me a good product in the end and save some money. i am 17 and my 18th birthday is coming up in a couple months so i will be able to purchase the ffl items soon. I am on a budget but would like a good looking, reliable, and accurate rifle.