Ok, so I have a RRA mid-length that I bought through a dealer. I love this rifle but now I am considering a build. I have a few questions to those of you with experience in the matter. How truly cost effective is to build your own AR? What are some good places to buy from? What should they different components cost (i.e. receiver, trigger group, BCG)? I am actually thinking of building a dedicated .22 but I'm not sure about that yet. This gun will be for plinking mostly. I really just kind of want a project and to have something that I have built. I will be in no rush and will pick up pieces as I can. Thanks for your help!