I collect semi-auto handguns and old (full length) milsurp mausers. Now I'm thinking about getting a black rifle so I'm beginning to research a subject I don't know that much about. i probably won't actually take the plunge for a few months, but in light of the high level of knowledge i've seen in posts from INGOers I was hoping some would share some basic knowledge with me. My purpose is to have a firearm to control out to 200-250 yards that would be accurate and not too unpleasant for my wife to shoot. I would like advice/info on all customizable aspects (ie barrel length, types of lower and bcg etc ). I haven't decided between 5.56 and 7.62 (although I expect 7.62 might make achieving a comfortable shoot for the wife more difficult) and would also appreciate links to recommended reading (keeping in mind I'm quite new to this) That said I'm also an admirer of Eugene Stoner and really like the looks of the old AR-10's with the weird brick red bakelite. I don't really know why.